The frothy mixture of lube and fecal matter that is sometimes the by-product of anal sex. Better known as santorum.
After I finished your mom last night, her duck butter stained the sheets.
by Bok May 09, 2006
The buttery white liquid that is located south from the balls and in central america to the but hole. You can scoop it out in the shower.
I licked Mitch's duck butter last NIGHT.
by James Gilburetson March 22, 2004
the sweat that accumulates in and around the ass crack.
i was rocking so much duck butter that i slid off of the toilet.
by mwolfe February 11, 2004
the pasty, sticky film that builds up between the leg and nutsack when engaged in strenuous activity
Scott worked out for two hours and wiped the handful of duck butter from his leg and slapped Bennett in the face with it.
by Shiggity shiggity shwa September 12, 2003
The pasty secretion that builds up under the fore-skin if not washed.
by Zeb March 01, 2003
The sweaty juice that builds up under the ballsack after strenuous activity.
After raking leaves all day, Doug had to wipe the duck butter from his crotch.
by web December 12, 2002
the hand Ace+8 in a game of hold'em poker
you get delt an ace.. then an 8, duck butter
by El Fuckin Capitan April 18, 2010

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