Tranfestoid(s) is someone or something that is abnormal and must be obliterated at all costs. They are found lurking in the abyssal trenches but can be found under your local bedroom floarboards; floorboard 69 is where Transfestoids are commonly found.
Dude 1: Aye dude, look over there!
Dude 2: Ewwww! Look at that radroach smellin, negroid lookin, Neanderthal rag dwellin, balduccin capoochin Benis lurking TRANSFESTOID!
Dude 3: HAHAHA! TRUE!