1 definition by chaka430

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.
Oh, Billy's Duck Butter smells so strong! I just want to spread it all over my toast!
by chaka430 March 10, 2015
Get the Duck Butter mug.