Monster-face Edit Meaning

1.

anyone who's facial features take up a disproportionately large amount of their skull.

dude, your girlfriend has total monster-face. she looks like the singer from bane.

2.

oral sex involving pushing the giver's head into the receiver's pelvis so hard as to injure the face of the giver.

I monster-faced your mother so bad last night, she lost most of her teeth.