dog food face is an insult that is used to people who are so god damn ugly that there face looks like dog food used for people who have bad acne as well.
"jesse mccartney you are a dog food face"
by spittlz May 11, 2005
Someone that no matter how much weight they lost or how much plastic surgery they had it still wouldn't help.
"Hey Dog Food Face!!! Get your fat @$$ over here, NOW!"
by Conster February 27, 2006