The combination of sweat from the ballsac and anus that creates a buttery film on the grundle and butthole. occuring usually from an unwashed scrotum creating a smelly odor that worsens in thickness and odor by the minute. Also known as DB or Deeb.

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

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.

A creamy substance brewed in the spot between a females vagina and asshole produced by vaginal secretions and ass sweat mixing together.

The most common secretion of the grundular or taint region. This secretion is a mix of sweat, dryed skin and ass smell.

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.

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.