Can be related to a sweet tooth with sweets, just with sex. A compulsive wanting to fuck when you see a hot girl.
I've got a fucktooth.
by Sandy Cline January 16, 2005
An exclamation used to express anger when you cannot come up with anything more creative than putting two words together that have nothing to do with each other.
Shutup you stupid fucktooth!
by thewhiteguy May 25, 2003
by Tosser Dave May 10, 2003