2 definitions by freaknasty1

Top Definition
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
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

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