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1.
A characteristic or action that is homosexual beyond redemption.

Autofag cannot be reversed by any explanation, justification, ect. If you have been Autofagged, you ARE a faggot.
John: "Wow, did Henry really just wear pink shorts to school for the third day in a row?"

Sam: "AUTOFAG!"

Henry: "Dude, I haven't washed any of my other clothes yet, cut me some slack."

John: "Nope. Autofag!"

Sam: "Don't try to justify your homosexuality with logic. AUTOFAG!"
by The Best Definer Ever? October 10, 2010