2 definitions by freaknasty1

Top Definition
The juicy substance between your upper thighs (usually around the butthole). a combination of butthole sweat and leftover poop.

When you dont wipe good enough after your last shit, and then sweat from between your thighs.
Danny: Hey man whats that smell?

Phil: oh dont worry man thats just my chicken grease. i didnt wipe very well after my last shit! sorry bro.

Danny: you get that taken care of buddy
by freaknasty1 June 18, 2010
The act of farting while you have chicken grease (mixture of butthole sweat and leftover poop) between your thighs.
Guy 1: Whats that smell?

Guy 2: haha that was my dirty muffler!
by freaknasty1 June 18, 2010

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