REAL DEFINITION: It is the creamy peanut-butter like substance that is produced from anal sex with a partner who forgot to clear the shoot in advance. The "churning" of the "butter" creates a quacking sound. Hence: Duck Butter.
by supercakk July 29, 2009

Smegma: The foul, cheese-like sebacious substance that grows beneath the foreskin or beneath saggy tits.
by Vertigo1968 July 16, 2007

Duck Butter is the gooey substance that is formed next to the ball sack and in the butt crack. This is formed by lack of hygiene, long days of arduous sweaty work, and native americans. Duck Butter is made up of oil, sweat, dirt, and sometimes cum stains. This mixture of components under the proper temperature, humidity, and friction, forms a buttery substance that leaves stringers when your balls are seperated from the inner thigh, or when you spread your butt cheeks. Colors can vary from brown, yellow, white, to an occasional green. The consistancy is that of mucas.
Person 1: "We don't have any margerine for the grilled cheese sandwhiches."
Person 2: "I only have some Duck Butter; however, we should probably not use it."
Person 2: "I only have some Duck Butter; however, we should probably not use it."
by Lost Almost August 16, 2010

The combination of sweat from the penis/scrodom area, and the anus. These two meet on the gouch and form a deadly serum called Duck Butter.
by vegieman92 February 2, 2009

Dude I had a doubleheader tonight and i had the worst case of duck butter because of those damn uniforms. That shit's nasty
by DudeManBroGuyPalPartnerBuddyFriend February 21, 2008

by Non Jay June 5, 2005

the name of a product, used in the lubrication and assembly of hub and spigot pipe. applied to the inside of a gasket that has been placed inside of a hub end and on the outside of the spigot end prior to joining to ease the process along. duck butter itself is comprised of water soluble vegetable shortening.
by Alpha Raptor August 16, 2008
