What's the best prank you did in school?

[Jean-Marie_Céline]

The first and best prank I did was in high school, towards the end of the year.
Some girls had the idea but they convinced me to follow along. They took the anatomy torso, put it on the teacher's desk, put the skull from the anatomy skeleton on it and draw a sign saying "Miss Tirloni (the teacher) new boyfriend". I felt like take a flower from the vase and put it in its mouth.
When the teacher arrived, she was dumbfounded, then calmly said that whoever did that better step up or she would punish the whole class.
The girls stepped up but when I tried to do the same one of them, Chiara, made me a "no" gesture. I was class representative and never did anything like that before, but I step up anyway and the teacher was really surprised. I asked if putting the flower meant I was responsible too and she said yes and that she didn't expect me to be involved.
She made us clean everything and then copy three pages from the Biology book as punishment, but she wasn't particularly angry.
I still got 10/10 in behavior after that.
What about you?

Updates

+1 y

G@G messed up again. This was to go in "Education and career", not "Dating".

[Hermes-Paris]

Spur of the moment thing I would never do again. Junior year high school we were in the band ready to play the exit march during the senior's graduation ceremony. The entire gym was filled with kids and proud parents and our band master had is baton out ready for us to start playing. The kid next to me was leaning forward taking to a girl so I slid his chair back an inch or so. When he tried to sit down he missed his chair and he and the chair went back into the percussion section where he knocked over the cymbal stand, and the snare drum. Which fell into the kettle drums and as the percussionist was trying to save the snare drum he fell over and took the tubular bells with him taking out the xylophone as well. The whole thing seemed like a train crash that lasted for 2 minutes. OK ten seconds but it was beautiful Years later they still talked about it. It was probably the worst performance of Walton's Crown Imperial March the world has ever known as most of the us were either in shock or laughing our asses off.

[Dazed0N0Confused]

It wasn't a prank, it was a class project, but I'm the reason my high school cannot do the "Egg Drop" anymore.

End of my senior year, Physics Class. There were 2 Physics classes (Junior & Seniors) & 4 Earth Space Physical Science (ESP) classes (Freshmen) & we were competing for a pizza party funded by the other class. With an egg drop. Highest percentage of surviving eggs won the pizza party. So physics had to do 2 experiments each, one based on the parameters that the ESP classes had & the other we could do anything we wanted, so long as the egg survived. Well I put my "physics" egg inside 2 balloons. Blew the inner balloon up with air, 4-6" in diameter & filled the outer balloon with about 10 gallons of water. They told me to go last, after all the other eggs were broken, the yolk & whites along with their broken "houses" were littered along the ground. I should mention that this was INDOORS, not outside & that I received permission from my physics teacher to do this particular experiment... Well the outer balloon with water absorbed the shock of the impact & burst, sending 10 gallons of water, broken egg & "houses" all over the floor. The balloon with air remained unharmed & so did my egg 🙂 but the janitors spent the whole rest of the day cleaning it up (they knew who I was & glared at me for the remainder of the school year) & to this day my high school is still not allowed to do the egg drop. But the physics classes got a pizza party!

[Daniela1982]

Did you use a condom as the balloon as I don't know of any balloons I've ever seen that had a stem big enough to fit an egg through without breaking it, unless you used a quail egg or something.

[Dazed0N0Confused]

Nope, used normal balloons with the thicker rubber. The bigger ones.

[Dazed0N0Confused]

I had my brother stretch the openings after I got them inside one another so I could place the egg in

[glamz091506]

Goodness, I was never part of pulling a prank. And all the pranks I've witnessed always took a bad turn of events. In 6th grade, I knew of a boy that placed a stink bomb in another kid's bag who was in my class... the whole floor reeked for the rest of the day and the child was suspended.

In grade 10 I had a biology teacher whom was an exchange teacher from Australia. She apparently had forgotten that she was to teach our class (as she still was getting use to organizing herself and knowing the schedule), onto of that, there was suppose to be a quiz that day... anyways, the class decided to not go and find the teacher. Whenever a teacher passed by the room, everyone apparently pretended they were doing classwork. The vice principle apparently even paged the room, and a student just told her that the teacher stepped out. Heck, a group of students even went out to order pizza and bring it back to the class - everyone sat and hung out for an hour and 15mins until their next class. Everyone who was present got detention the following class.

[najekim]

Me and a buddy of mine and our girlfriends at the time found out that a friend of ours girlfriend was going on a month's vacation in Europe with her family. So we decided to do this (this was in the early 70's, no cell phones, no internet, etc.) The night before she and her family left the four of us went over to her house on the pretense of giving her some money for gifts to get us and quietly whispered in her ear the John, the boyfriend, told us he caught a STD and wanted to tell her but he had to go into work that night (which he did) so asked us to pass on the message for her to keep an eye out for any symptoms. The next night we caught up with John and told him that Jane (his girlfriend) had asked us to pass along to him that she caught a STD and to keep an eye out for symptoms. Well, needless to say he was freaking out over that entire month and when she got back and they got together and compared stories. . . neither talked to any of us for the next month. We four thought it was a hoot but accepted our punishment.

[TheorionMage]

From 64-69 I attended a small 3 story parochial high school in Pgh.
Myself and four other boys were in an 'after hours' science honors club giving us access to the school's 3rd floor lab.
Only marginally supervised, we didn't BOTHER to concoct illicit pharmacology; instead we made crudely-distilled Nitro Glycerin, nominally stabilized using lime gelatin from the Home Ec. kitchen. We achieved a 2"x2"x4" jiggling mass which we gingerly took to the end of the school's 3rd floor hallway and flung it out the window whose 'drop' terminated in the school's auditorium's stage door loading dock.

We blew the wire-reinforced glass out of that dock's steel doors and we made ourselves immediately scarce. Leaving the school by several exits, no one witnessed anything but a loud bang!

[Hannah_le]

Oh man. I don’t think I ever did a prank but I have lit fireworks in front of the school with friends like while everyone was going to buses. That day we were gonna walk home from school so we decided to do that and dip but no one caught us hehe

[Hannah_le]

Thanks for the idea tho ahaa

[Jean-Marie_Céline]

No problem lol

[DJB72]

Our school had security hired thanks to the previous senior year's action of spray painting the cricket pavilion pink.

Previous year's pranks included taking the physics teacher's car apart and rebuilding it on the roof of the science lab, washing up liquid in all the toilets, and replacing the cadets rifles with water pistols.

[andreasderjuengere]

There were just too many - I could not say which was the 'best'.
However, after a while the principal used to ask ME! right away whenever something... happened.
As a team effort, I fondly remember the day when on the second floor all classrooms were barricaded from inside (we retrieved our SWAT teams through the windows and via the (flat) roof.
There was one other event when the teachers in the morning faced their classrooms of students from a neighbour town school - and vice versa. Swapping ca. 200 persons was not easy to organize.

[offendedsorbet]

-Turned the art tables upside down
-Sticky notes all over the principals car
-Cling film around a head students car
-Cups filled with water along the corridor leading to the principals office and the staff room
- changed the desk layout of a very finicky teachers classroom

[Whitemeatchicken]

Sr. Prank. We got 4 pigs and numbered them, 1.2,3 and 5. Faculty and staff went nuts trying to find pig number 4 haha

[Whitemeatchicken]

Oh btw- we let them loose in the school.

[Matt41]

This might not sound that good now, but in the moment it was hilarious, so bear with me.
One of my friends rang his phone from the payphone across the road from the school, so we had the number. After he got back to school, we spent lunchtime ringing the payphone from a classroom looking across the road when other students from our year walked past it. It confused the hell out of them and some of the responses we got were priceless.

[DrunkAss]

I'm a bit drunk and might slur a bit but went voice for this one:
https://voca.ro/14Xc1zGMNXB3

[Twalli]

I didn't do this, but a friend crashed our entire school's network and then was hired by Google and decided to not go to Hsrvard.

[Citizenkirk]

It was actually at band camp, which was a school activity. I can't give specific details in this thread category, so you will have to ask in sex and relationships category.1

[C3397]

I set up the scary video on a laptop in the classroom for some of my classmates to watch when they're being nosy and it made them scream :)

[Aiko_E_Lara]

The classic paper and tape at the back of their clothes with some nasty things written on it. I did it to a teacher and no one knew it was me lol. Took him long to notice.

[Josh4206]

Seran wrapping the principles car on his birthday haha

[Josh4206]

Saran*

[zagor]

Was too shy in HS. In college I signed my roommate up for the military even though he was a foreign citizen.

[_no_one_]

Watered the whole corridor of our floor. It was really really messy lol.

[Fromdusktilldawn]

I never really did pranks but brought some polish firecrackers (like American m80) to school aome times.

[skeetskeetskeet]

Gave a teacher about half a eye drop bottle of liquid LSD and watched the fireworks... he got taken out in an ambulance

[Aphrodite11_96]

Bought a gift to give “to someone” a guy stole it was a glitter bomb. It was hilarious pink glitter everywhere and in his car.

[psychoticanimaIIover]

Lol. I never did anything like that.

[Anonymous]

Bad boy. You hoped that would score you some pussy, admit it 😂

[Jean-Marie_Céline]

Not really...