look up any word, like donkey punch:
 
1.
cheek, in a cheery fashion
i got a shot on my left but "cheerk"
by riceonlyplz April 13, 2008
 
2.
Cheerks is when your thong makes it out of your pants and is a clear and present danger to passersbye - coming off the cheek
Jack: I think your thong is sticking out of your pants Jill !@@#$$

Jill: Oh Cheerks, not that again!
by Listerine1 January 14, 2011