Myself? Sometimes I have weird muscle spasms in my right hand, I like to think it's letting me know it's angry for cheating on it and not some terrible, life threatening problem.
One of my ex-girlfriends had this weird reaction though.
Lollikittie wrote...
Ummm, a couple days ago, I ended up shaking uncontrollably for 20 minutes. I kind of just laid there. >///<
It was basically this, but happened every single time she had an orgasm. I wonder what causes that...