Reverse Orgasm
The horrible feeling you get when many bad things are happening to you at once and it doesn't seem like it can get worse, and then it does; causing you to feel like you're having an orgasm, but in reverse.
SHIT. I HAVE A HUGE TEST TOMORROW, MY GIRLFRIEND JUST BROKE UP WITH ME, AND I JUST FOUND OUT MY PARENTS DIED. I THINK I JUST HAD A REVERSE ORGASM.
Reverse Orgasm
When you orgasm but you see something that turns you off so much that it becomes a reverse orgasm and the semen gets sucked back down your dick.
That hot bitch gave me an orgasm but then she farted on my dick and it turned into a reverse orgasm.