Genital Spasm
Very similar to Groin Spasm, a genital spasm is a condition where your nuts start to hurt involuntarily, and either feel a short spike then nothing, or A FUCKING JET GONE INTO YOUR TWO TESTICLES LIKE 9/11! You will possibly nut in your pants if you are over 14.
I think I might be having a genital spasm again, back away, I need the washroom.