A face covered in blood, resulting from eating out a girl while she is menstruating, and the untimely menstrual discharge covering the muncher's face.
Aaron: How was your night after you left the party with that chick?
John: I don't want to talk about it.
Aaron: Come on man, spill the beans.
John: Dude, I got some bad Pizza Face, and you know that sort of stuff grosses me out to the max