Twatasy Share definition Flag Fantasy and twat mixed together, so a better way of saying obsessed and a twat who has some sick fantasy's Oh my god. Did you read that twatasy on tumblr?Yeah...it was just...insane Twatasy by epicninja. July 8, 2012 0 0 Get merch Get the Twatasy mug. Buy Now — $32.95 See more merch