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a bacterial disease
skinny white boy who looks like he has down syndrome = firth
af sam excellent 4. december 2003
The process of being penetrated in the booty hole while giving birth.
Christopher is a firth baby.
af CupDude 17. februar 2009
A derivative of filth. Meaning lower than specks of dust on your shoes.
Man, that is pure firth!
af Crismon 16. juni 2003
Puss-filled bubble, usually located around the anus.
"Yo, is that Firth in that Chevy?"
af Dr. Curtis 6. december 2003