It is a derogatory term used to make fun of another person. It would mean that someone's face resembles a buttocks.
A buttface!!
Buttface
we dont you buttface!
Butthead And Buttface
It may be in a dictionary of slang.
"Carbajal" is a surname of Spanish origin, typically derived from the name of a place or a profession.
buttface newyork
twenty million you buttface
Buttface and Doodoobreath
buttface annie
yes you dumb buttface
BIG MAMA BY:MARLEE BUTTFACE