Neanderthesbian Share definition Flag She who is a striking combination of a Neanderthal and a Thesbian (a woman that is so ugly and masculine that she has to resort to lesbianism for sex). "Yo Jethro, that bitch looks like a Neanderthesbian.""For sure. That is one disgusting human" Neanderthesbian by The Lin August 27, 2009 0 0 Get merch