a gd way of telling some one they are a fuker. usually it will not be recieved with a return beating (if guy) or bitchin (stupid fuking whores)
"jack is a twatalack because when he suked my cok he did not lick up my jiz"
A light-hearted way of telling someone they suck arse, or a way of preventing your insults from sounding too serious.
1. Hey Fuz, you know you really are a complete twatalack.
2. I really hope you die in a horrible accident, you twatalack.