a bacterial disease
skinny white boy who looks like he has down syndrome = firth
di sam excellent 04 dicembre 2003
The process of being penetrated in the booty hole while giving birth.
Christopher is a firth baby.
di CupDude 17 febbraio 2009
A derivative of filth. Meaning lower than specks of dust on your shoes.
Man, that is pure firth!
di Crismon 16 giugno 2003