1 definition by youcookedyourfoot?

when maintaining a solid A average but getting a heavily weighted B ruins your whole GPA.
Maia: "so how were your final exams?"
Rachel: "ugh, I got killer B's on all of them, they were pretty hard"
Maia: "that sucks balls"
by youcookedyourfoot? December 1, 2009
Get the Killer B's mug.