STFD
abbreviation; other word formation type initialisms
Short for “slow the fuck down.”
Etymology : Take the initials of the words in the sentence or phrase “slow the fuck down”. This word would probably be used informally and in relatively vulgar ways. It might also be an analogy to STFU (shut the fuck up), although used in a less insulting way.
Source : “I’ll stop ‘em and write out a warning ticket. I’ll write S-T-F-D. Slow the fuck down!” (Song Welcome to the Rock from the musical Come From Away, 2013)
Last modified: 5 December 2020