look up any word, like jamflex:
 
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.
by ryan ingersol March 07, 2005
 
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.
by Norristonian April 18, 2004