Definitions by brohohohohohohohoho

S.I.N.S. 

sorry I'm not sorry

Meant to be used facetiously

pronounced: sins

person 1: dude, you just ate my last cookie!

person 2: S.I.N.S.

Person 1: you suck.

S.I.N.S. by brohohohohohohohoho May 14, 2011