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The Fuck. Most commonly used as a shortened WTF. However, TF is used in instances when WTF takes too long to be said. TF is also used in a more exclamatory sort of phrasing.
Josh: Hey, dude, look out for the FUCKING TRAIN!

Nate: TF? *hit by train*
by Doople Banger May 13, 2009
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3
The Fuck? sortof a short version of WTF (What The Fuck) only it sounds cooler
person 1: ZOMG I THINK MY EYE IS FALLING OUT
person 2: tf?
by bow wow91 August 16, 2009
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5
The Fuck? But with a sassy sort of undertone.
Tf is up with you today?
Tf do you think you're doing?
Tf ARE you doing?
by Hannah Van Miths August 25, 2015
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6
'the fuck' as in the last two letters of wtf
whotf is this asshole?

whytf did that kid just do that?

wheretf do you think you're going?

whentf did this asshole get here?

howtf did that shit just go down?

wtf?
by Bophadeez May 24, 2010
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7
Short for "Transformation Fantasy" or "Transformation Fetish" or just simply "Transformation".
Some furries actually have TF fetishes.
via giphy
by ISDLBZF October 27, 2018
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