Substance that results from the mixing of semen and vaginal fluids that rolls down the nut sack and grundle after unprotected sex. Once mixed, if left unattended, a sticky residue will result on the nut sack and grundle with a profound citrus like smell.
Fuck man, wash up after gettin some I can smell your duck butter from over here.
by MikeAllen September 01, 2004
sweaty film produced on a man's balls and taint after much physical activity on a hot day.
"get out the gold bond, Ed, after walking clear across campus the ol' duck butter is getting thick!"
by total playa June 01, 2004
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.
pass the duck butter and grab the pry bar, we're getting this done today.
by Alpha Raptor July 21, 2008
Nothing in relation to the sweat glands on ones crotch or anus-y areas. Instead, Duck Butter is the secretion on Ducks wings and feathers so that they may still fly even after being in water.
Child: Mommee, why canz teh duckkee stiww fliiiy????
Mother: Because of teh duck butter, child.
by Brocke June 25, 2005
A broad term to describe any sort of deposit, build-up, slime, grime or sludge with a likeness to feces or slugs, the consistency of a glob of grease or jello, and colors from light beige, neon orange, to black.
"I went to open my car door and there was someone left some duck butter on the handle."

"When I walked into the bathroom, it smelled like Hoboken and there was duck butter splattered on the mirrors and on the ceiling."
by baconn August 29, 2012
Duck butter has been infamously claimed to be the 8th wonder of the world. The term "duck butter" was coined under the auspices of ducks hunters. Duck butter is the result of wearing hunting waders all day that leads to build up sweat, grime, gun powder, flatulent debris and the occasional pubic hair under ones scrotum traveling all the way back to the anus
"man, the only thing Robby has going for him in the duck blind is his uncontrollable build up of duck butter."

"After a long day of wearing waders out duck hunting, despite Chris's film of duck butter he still landed a Fupa queen."

"I think those Irish car bombs last night made my duck butter worse today"
by FUPA Queen January 21, 2012
A cheesey (and profoundly smelly) secretion that collects on the backside of an unwashed scrotum
John was surprised to find that he liked the taste of DUCK BUTTER on his morning toast.
by JTB October 06, 2003

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