It's a scientology thing where they make you stare at eachother for like 30 minutes and part 2 is they insult you (blatantly) for like another 30 minutes.
Hym "Wha- STOP STEALING MY THING FOR YOUR CULTS! THAT IS NOT WHAT THIS IS FOR! TFO!? MORE LIKE : Tf? How many cult did this start?"
The acronym TFO (The Forbidden One) can be used as a code name for someone you don't like. It is a synonym of You-Know-Who and can be used in public situations when you want to gossip about someone without naming them.
"TFO is staring at me again. He's so annoying."
~other people in public will not know who you are talking about~
You call someone a TFO if they are single and forever alone; TFO is short for Table For One.
"Willie Boy will never get a girlfriend. He's gonna be TFO for life."
"I bet Willie Boy TFO'd it to the movies today huh?"
north african way of saying ew, that something is nasty
"you know i sharted myself?" TFO!