That funny look a man, or woman gets on their face when an intimate subject is brought up, usually something sexual. Often accompanied with the phrase "I dont know what you are talking about."
Teen 1: "Did you see Dad's sex smirk on his face when Mom said something about going on their first camping trip?"
Teen 2: "Yep, I puked in the back of my mouth a little."
Teen 2: "Yep, I puked in the back of my mouth a little."
by MoreThanLust December 13, 2011
1. An involuntary smile that is the direct result of recent sex.
2. A grin that appears when your friends start talking about sex and they don't know that you've done it recently or ever.
2. A grin that appears when your friends start talking about sex and they don't know that you've done it recently or ever.
by Prolemthas June 17, 2011