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Abbreviation for Tin Foil Hat, also tinfoil hat, a general term for a piece of headgear made from one or more sheets of tin foil, aluminium foil, or other similar material. Some people wear the hats in the belief that they act to shield the brain from such influences as electromagnetic fields, or against mind control and/or mind reading. The concept has become a popular stereotype and term of derision; in Internet culture, the phrase serves as a byword for paranoia.
There were a lot of tfh types at the ufo convention.
by bkdouble October 05, 2006
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Tin Foil Hat Society this is a hash tag used on twitter when discussing a subject that is borderline conspiracy theory.
The last earthquake was caused by the use of high tech bombs in the mountains of Nevada, TFHS.
by rudebastard February 05, 2010
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Man 1: Check out my tfh dude
Man 2: tfh roflmfao
Man 3: Can i c ur tfh up close
Man 1: Ok, but careful IT HAS SHARP CORNERS
Man 3: Ow my eye! tfh!!
by MetalMeerkat July 01, 2009
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Scottsdale resident: "OMG, it is TFH today! When will it ever get below 100 degrees!?!?"
by tfhgirl September 10, 2008
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Stands for Totally Fucking Hilarious. Is way better than LOL, LMAO, etc...
Timmy: Did you see Saturday Night Live last week?
Karyn: Yeah! It was so TFH
by bettyboopbopper June 27, 2009
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