O-spasm
When your body turns into a firework show and your brain is screaming, 'YES YES YES!'
I had an O-spasm and my roommate asked if I was having a seizure. I said no, I was just having a good time.
My girlfriend gave me an O-spasm and I forgot to breathe. She laughed at me.
I got an O-spasm during math class and my teacher thought I was possessed.