Cybertranny Share definition Flag A person who goes on chatrooms pretending to be a member of the opposite sex. 17 year old Chantelle is really a fat bald 42 year old man called Billy who lives in his mum's basement. Cybertranny by psycho bitch March 6, 2004 0 0 Get merch Get the Cybertranny mug. Buy Now — $32.95 See more merch