duck butter is the nasty film of sweat and someother shit that builds up in a man's taint (space between balls and asshole). it got it's term because that shit is thick like butter
by THCrandomhero October 18, 2006
 Get the duck buttermug.
Get the duck buttermug. A mixture of sweat, dingleberries, baby powder, loose pubes, urine, and dirt that collects in the chode of a soldier after they've been in the field without a shower for more than a couple days. It can be scraped off with a fingernail, mixed with water and rubbed on the face and arms for insect repelent.
Matt, "I order you to take a shower when we get back to base. You fuckin' stink!"
Jeff, "I know. I'm churnin' some serious duck butter!"
Jeff, "I know. I'm churnin' some serious duck butter!"
by dooshkanew August 23, 2009
 Get the duck buttermug.
Get the duck buttermug. The curded medley of perspiration, dead skin, nether hair and miscellaneous
material gathered between the tigh and the scrotum as a result of a hard days
work.
material gathered between the tigh and the scrotum as a result of a hard days
work.
by RandR July 18, 2005
 Get the duck buttermug.
Get the duck buttermug. A creamy substance brewed in the spot between a females vagina and asshole produced by vaginal secretions and ass sweat mixing together.
by Scottpatricks December 9, 2003
 Get the duck buttermug.
Get the duck buttermug. The most common secretion of the grundular or taint region.  This secretion is a mix of sweat, dryed skin and ass smell.
by Mig Smalls June 1, 2006
 Get the duck buttermug.
Get the duck buttermug. 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
 Get the duck buttermug.
Get the duck buttermug. Smegma: The foul, cheese-like sebacious substance that grows beneath the foreskin or beneath saggy tits.
by Vertigo1968 July 16, 2007
 Get the Duck-buttermug.
Get the Duck-buttermug.