Fictional substance when you just don't know what the hell it is.. An exclamation to confuse the hell out of people at the mall who think you said something really bad. The unwashed stuff on teeth, or nether regions
the guy removed her panties and exclaimed "DUCK BUTTAH!" to embarrass his girl, But she yelled DICK CHEESE, and it was true!
by Striper-King December 21, 2016
Get the duck buttah mug.