Ball beg 

Scrotum in Belfast.

These new trunks are cuttin' the ball beg clean off me.

Daryll is actin' the ball beg.

Ball beg by clarkekentyboy May 13, 2009

ballbeg 

norn irish slang for male genitales, also can be used to describe some one unpleasant or used when slabbering in an argument.

"mere ya wee ballbeg ye!"

"hes a wee ballbeg"

ballbeg by caleb young April 22, 2008