What is something a woman should never even prank a man with?

[Anonymous]

Obviously for us, a man should never prank about cheating, make jokes about our bodies in front of his friends and family and don't even dare do a fake proposal. Unless you want to lose her forever, go right ahead and do it.

Now lets switch things. What's something a woman should never prank a man with? What's the one thing that would have an equal reaction to a woman leaving and blocking him if she does it as a joke? Something that not even sex would fix it, that would make him block her right away too?

[TonyMetal___86]

Same things that you have mentioned except proposal because if i'm in a serious relationship, do i need to propose? I am not going to propose, i'm not this guy who falls on one of his knees and beg for marriage just so she can look up and think if she says yes or no, i'm not born to humiliated!
If i'm in a serious relationship it means that i'm going to marry her...

[Zenpanda]

Cheating, pregnancy, calling him things he isn't (abuser, rapist, pedo), body mockery, shaving his hair/facial hair, deleting his saved games/accounts, destroying his stuff, selling his stuff.

[CupcakeTheDestroyer]

Fake break-ups, fake pregnancies, fake cheating, basically lying about anything devastating and then telling them it was a lie

[Vesuvius87]

Fake pregnancy pranks

My boyfriend hits me, raped me prank

I cheated on you prank

[CrabCakes11]

I think that generally you shouldn’t do any mean spirited or harmful pranks to anybody

[TadCurious]

Don't joke about the size of his penis.