Someone who is fat and obnoxious. Typically associates him or herself with Holden’s or fords. Like a Bogan, they enjoy big power, V8's, VL turbos and hektic skids. Commonly of ethnic background, but not nessisarly.
The Chunkshank is highly agressive, when insulted can be very dangerious. Due to their low intelligence, the Chunkshank uses size & brute force to dominate their opponent.
This is when jizz takes so long to exit the penis that parts of it solidify and form gooey lumps or 'chunks'
Guy1: I was beatin my love-rod last night and i fell asleep just as i was about to blast
Guy2: Shit buzz man, what happened?
Guy1: I woke up and my pubes were covered in 'Chunkyspunk'
Guy2: Nasty man, that shit went lumpy overnight, you should be more careful