STFIU/STFIM 

STFIU-verb-meaning, stay the fuck in you.
mainly used in sexual intercourse.
"I want to STFIU"

STFIM-verb-meaning stay the fuck in me. also used in sexual intercourse.
"You want to STFIM"

"I want to STFIU"
"You want to STFIM"
"We both want to STFIU/STFIM

STFIU/STFIM by Marcus12345678910 February 25, 2009

STFI 

Opposite of gtfo meaning "stay the fuck in."

Older brother: "Hey kid, GTFO."
Younger brother: "How about I just STFI?"

STFI by Popcorn Man June 24, 2006

STFI 

abbreviation of 'search the fucking internet', sometimes used in games when somebody askes a dumb question which he could easily look up on the internet

Person 1: "Where do I start this quest?"
Person 2: "STFI!!"

STFI by Rholdadc December 28, 2008

stfmu

stfmu means shut the fuck me up, it’s the reply to stfu.

example 1
person 1: stfu
person 2: stfmu 😏

example 2
person 1: shut the fuck up

person 2: stfmu you pussy

stfmu by fengaritsuki May 31, 2021

stfig 

when you call gifts backward

when you doing dank memer pls work and you get talk to say gifts backwards it called stfig

stfig by joey mimi July 13, 2021

STFIL 

An acronym used during election year, and more precisely on election day. It stands for Stay The Fuck In Line. It represents a commitment to vote on election day no matter what.

Hey buddy, don't get confident that the democrats will win this year and go home, STFIL!

STFIL by Leitmotiv March 15, 2009

stfi 

abbreviation for "sure the fuck is" . Usually used in a sarcastic tone.

person1: "Isn't it nice to be treated like that?"
Person2: stfi

stfi by J_hoe February 13, 2008