An amalgam of the word 'batty' (Jamaican Patois for 'butt', 'arse', 'ass', 'bum'; and 'clunge' a relatively new term for 'vagina', gaining possible popularity as it's not necessary to sensor like the full on version of the word 'c*nt'.
Together the words making 'battyclunge' refer 2 a submissive anal sexual act, possibly gay-related cuss yet again. Literally meaning 'mansnatch' 'ass-screwing hole', it calls out on a person's doormat tendencies, as in 'bending over' for anything, being a mug 2 oneself, letting others pull a fast one over you and hussle you.
what he sold you was rubbish, and you paid topwhack? you Battyclunge (Batty Clunge, Batty-Clunge)! You've been mugged off!
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.