This is probably stupid but what is an orgasm?

An orgasm is when you reach climax and win a lot of money

Its like winning the lottery but only for a brief second and then you have to play again. :)

It is almost better that you don't know until you find out on your own and by no one elses answers or suggestions.
But be careful and always respect yourself and your body. I don't want you to get hurt or abuse yourself in anyway.

First off, it's absolute heaven for however long you have it.

Biologically speaking? That's actually surprising how few people know the answer to this that I've met. Don't think your question is stupid - it's actually pretty good.

For a guy: The feeling he gets is actually the rhythmic contraction of the prostate gland, which is the gland responsible for creating and storing the seminal fluid (semen). There are other muscles that contract at the base of the penis that heighten the feeling. The feel of the semen and sperm being lasted through the urethra is also unlike anything else out there. Simply put, Heaven on Earth.

For a girl: This is a little more complex. There are muscular contractions throughout the body on a whole other scale to what a guy feels. The feelings apparently feel like they start in the stomach, as though a spring is being wound tight, and then eventually released and feels amazing. I'm no girl, so I can't describe it perfectly or even do it justice. Here's what actually happens internally though. All the muscles within the vagina contract rhythmically. It is actually done in order to bring any sperm further up into the vagina so as to create a greater chance for pregnancy. The cervix is also dipped repeatedly against the vaginal wall in the hopes of bringing it into contact with the hoped for sperm. Apparently, this all feels amazing. It's no wonder that many people go back for more.

I've also heard more than once that each other's orgasm feels great for the other and can actually help to bring about mutual satisfaction (i.e. A big stupid grin on the face that has to be surgically removed. ) That's meaning the blast of sperm into the vagina, and the contractions of the vagina against the penis.

No it actually isn't a stupid question I seriously don't know what it is either - I'm still a virgin and I still don't know the meaning or the definition of it or I don't think I even know the feeling - trust me the question isn't stupid it's just when people actually experience it - it feels good but trust me I don't think any of them know the meaning of the orgasm!