The sweat right between a mans testicle sac and leg that has condensed and gathered lint, hair, dirt etc... Usually the stinkiest/manliest part of the mans body. Although it is gross, women will always be attracted to it.
by chaka430 March 10, 2015
It is the paste that is formed in the rolling folds of fat. Found mostly on the Obese. It is made up of sweat, dirt , oils, and fats. With some powder mixed in to give it a paste consistency.
I saw that enormous an woman sitting in the ER waiting room. Eating Popeyes and complaining about chest pains. It was a hot night and you could see the Duck Butter oozing out of her folds of fat that look like ribs. And she has a ring of Duck Butter under her mammaries.
by Felix D. Katz November 19, 2021
that little bit of poop smear that you didn't wipe from your butt cheeks that becomes irritated when you are walking
I must have not wiped my butt clean enough it became irritated from walking and cause me to have duck butter
by Butterfor2 April 30, 2018
‘Duck Butter’ is the greasy, sweaty residue that builds up between the nutsack and inner thigh whilst wearing chest waders all day during 25+degrees on summer wildfowling hunt.
“Bloody hell Bob, that was a tough day out on the marsh, the old ‘duck butter’ is kicking up a bit.”
by Master Baiter 1972 June 19, 2021