FungleTussen or FungleTuss is a improper name for a new form of Chlamydia, not to be confused with FungleTussy. The medical term for FungleTussen is belymphogranulum venereum or LGV. Most times it is a derogative statement to guys or girls that seems repugnant, revolting, or just plain nasty.
Dang, that gurl be lookin' like she gots the FungleTussen.
Dude, the girl you slept with last night has the Tuss, you might want to get that checked..