Boy: (Showing off his new bike)
(Friends crowd him thinking he's so cool with his new bike)
Mom:(Puts helmet on her son) Don't forget your helmet.
Boy: *embarrassed) Mom, don't be slapping my penis!
somebody who has nothing better to do than to go home, lay on his bed, bored, and flap his penis around with his two hands continuously because he has no friends, or anything to do.
"dude do you think that moonster kid has any friends"
"who nathan? are you fucking serious man? hes such a dick, of course not, he probably just goes home every night and flaps his penis around out of boredom"
"what do you expect, hes a fucking dick, thats what he gets, and have you seen his clothes?"
"or his hair? i mean its like he WANTS to be a penisflapper..."
It is said of the situation where a person has the bad luck to make contact with his testicles against an undefined surface or object, intentioned or not.
Given the nature of the word, it is more appropriate to design cases where the interaction is made with a moving object, for example, a ball.
Although it is extremely painful for the victim, it tends to be considerably funny to people who witness it.
Today in the baseball game the pitcher took a nutshot; the baseball hit him in the nuts.
Man, I just watched the funniest nutshot video ever.