A code term for "attractive female" that one male can use in conversation with a friend, inconspicuously, in front of said female, without attracting attention to himself. (often abbreviated to simply "stuff.") could concievably be used between two females, or any other gender combination, but the use is classic "between buddies" behavior.
(Beautiful woman walks past)
DUDE 1: yo, there's some good stuff over there.
DUDE 2: Word.