Definitions by Smashbook

Tunk 

The male equivalent of cunt. The man's testicles and penis, the whole ball penis area.
First appearance: Kick-Ass issue #6.
Created by Mark Millar, writer of the comic.
"As in your cock AND your balls. Toddie said all the best ones have a 'U' and a 'K' and we thought this could be the guy equivalent of 'cunt'" -Kick-Ass #6
Also used as "tunk you" like "fuck you"

"Oh my sweet Virgin Mary... HE SHOT ME IN THE FUCKING TUNK!" "Yeah well... TUNK YOU ASSHOLE!"
"I'm gonna cut off your whole goddamn tunk!"

Tunk by Smashbook April 20, 2010