Kelly Osbourne: Lady Gaga is a "Butter Face"
butter face - n. A homonym that sounds like "but her face." To call a woman a "butter face" is to say her body is very sexy but her face is ugly. - "This girl was so hot, but then she turned around. I was like, Pete, check out the butter face! He said 'word,' and then we went fishing."
If it wasn't already clear, the Urban Dictionary sums up what Kelly Osbourne recently said when discussing the dance-pop phenom known as Lady GaGa.