look up any word, like cunt:
 
1.
'The Wonbang' is a south bucks term for a pro-aggressive punch, often derived from the sound of ones fist being hurled through the air, before crashing into another's face.
Person 1: "Oi, you wanna fight?"

Person 2: "Mate, I'll give you the WONBANG"
by Poingant_bottles November 28, 2013