A state of confusion or anxiety resulting from the ineffective or incomplete explanation of a particular topic. Not entirely dissimilar from an unsatisfying sexual experience resulting in the swelling of the testicles.
Person 1: I have stopped myself from crying so much today I have a headache.
Person 2: Doing that is like when a guy is ready to orgasm but doesn't. You are having emotionalblueballs.
Female equivalent of blue balls. Also incorrectly called blue ovaries. When you're fooling around with someone and you want to go farther and they don't...making your crotch/vag/groin ache so badly you can hardly stand it.
I went over to Steve's last night and we made out for 2 hours. I had to leave when he wasn't giving it up and now I have blue walls so bad I can barely sit down.