Acronym for "Totally Fucking Full Out". It means doing something with beyond conceivable level of commitment and motivation. "Full-out" is a common term used in performing art to describe performing without holding anything back. TFO and TFFO are acronyms commonly used in the urban dance community (originating from Vancouver, Canada) to express someone is dancing beyond 100%. (full-out<TFO<TFFO)

when you've done something so cringe you can't stop replaying it in your head and it stops you from getting on with your every day life