Definitions by Dj slander aka gh0std0g

dff 

designated fat friend
1) someone who hangs out with someone else that is much larger then there self
2) someone who is fat and hangs out with skinny people
3) when a skinny girl hangs out with a fat girl to make her look better

hey did you see that dff?
yeah holy shit that bitch was huge but her friend was cute

dff by Dj slander aka gh0std0g December 25, 2005