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TFSMF = Thanks For Sharing MotherF@(#€R!

It's more edgy than TFS. And, if someone is offended, you can claim that MF represents, "My Friend."
Via Text:

Reggie: "Hey bro, I just sharted, LOL!"

Lionel: "TFSMF."

Reggie: "Hey dude, it's not chill to call me a mothereffer!"

Lionel: "MF means My Friend. It's all good big homie!"
TFSMF by WorldFamous13 September 21, 2013
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this is an abbreviation of: “to be so mother f*cking god damn lonely”

it comes from the song abbreviation ‘tbsl’ (To Be So Lonely by Harry Styles)

this slang/abbreviation is used a lot in wattpad comment sections when people feel really lonely compared to the probably romantic scene they are reading.

it is widely used by (mainly directioner, harries, louies etc) wattpad users and is an inside joke from within the fandoms
A: “omg have you read ‘i sleep naked’ on wattpad?”
B: “ugh yes, louis and harry are the cutest couple”
A: “tbsmfgdl”
B: “ikr”

(usually typed in an online conversation and not said in real life lol)
Related Words
"Thank you so much for to playing my game."

This is a reference to a voiceline in Super Mario 64, and is an extension of "tysm".
This expression is used mainly within messaging applications after gameplay sessions with friends, similarly or alongside things such as "gg" or "wp". It has a friendly and somewhat humorous connotation, due to the referential nature and grammar of the phrase itself.
Person 1 : "those were some fun games man we'll talk later"

Person 2: "alr gg tysmftpmg"
tysmftpmg by KittehDoesWords February 26, 2023
top shelf motherfucker.
usually used by girls/women who think they are better than other girls, or think they deserve the best there is 'top shelf' being the highest quality or most expensive item in a store.
Facebook status: "TSMF!"
or

"he doesn't know im a tsmf type of girl"
tsmf by ksigswaagg September 23, 2011
thank you so much for your time
bob: which hair style do you like better?
mary: the first
bob: tysmfyt
tysmfyt by vellocets January 11, 2008

tismfruit 

a name to define a group of or one person who is being a fruit cup and autistic at the same exact time.
"fuck you dude."
"shut up man, you are a tismfruit"
tismfruit by megafruitmichael July 26, 2018

tysmfycstty 

Thank you so much for your constant support throughout the years
- friend 1: *complements friend*
-friend 2: "omfg tysmfycstty"
tysmfycstty by Psedupodia February 13, 2020