The algae-like film that develops between the underside of large breasts and the female's upper stomach. Easily identifiable by the dank smell and slimy film that develops over time
Lizzy has huge knockers, but no guys want to go near them because she can't get rid of the boob scum stench for the life of her!
by jrogers August 1, 2008
Get the boob scummug.