CTFD: An intialism for "Calm The Fuck Down" mosty used in chat forums and email, but having some leakage to vernacular usage. (see-tee-eff-dee)(emphatic)
"During the CoVid-19 lockdown panic with all of those empty shelves in the supermarkets, I wanted managers to put up signs link, 'Attention customers: please CTFD, you don't need to buy 25 rolls of toilet paper'."
It means Chill The F*** Down, or Calm The F*** Down, usually used when one person gets mad at something simple, which wasn't meant to insult. Also used to calm someone down before a Beef.
#1 "Dude, Stace went to the Movies with Robert"
#2 "WHAT?!?!?!?"
#1 "Dude, CTFD she went with her Posse"
"Yo mamma so stupid she put paper on the television and called it paper view!"
"What you say 'bout my mamma?!?!"
"CTFD, It was a harmless joke"