Term used to describe a person who always has his/her fingers in the anus. The person may do it for the simple pleasure of 'getting' that itch or because they are exactly just that - fiddle bums. Some also like to sniff their fingers after getting in *deep*
Can also be used as fiddle butt to describe somebody who does that in public. Fiddle fingers nail- nail or finger that has traces of being in the ass
Jammie: Hey Jack, what the hell do you think your doing?
Jack: Nothing man. Just scratching. Nothing wrong with that *shrugs*
John: walks by and says fiddle bum and walks of laughing!
Jammie to Jack: You always were a fiddle bum/ass/fingers/nail
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.