What is Gafgaf?
1.
A word to call somebody when you have no idea what else to call them.
It usually infers that the person being called it has Vagina Balls, a visile-through-pants Fire-Crotch, or just looks funny
"LOL! I JUST TOTALLY PWN$DUNGRFGT"
"...go play with your poo, gafgaf."
See