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tinfoil hat 

something the kids wear in the movie "Signs"
"so the aliens can't read our minds"
tinfoil hat by no-emo July 11, 2005

Tinfoil Hat 

A hat made of tinfoil that prevents people from reading your mind. Ironically, people who wear these hats in the first place don't usually have much of a mind left to read.
The only thing standing between me and the secret society's insidious mind manipulation techniques is my trusty tinfoil hat right here. Want one? Hey! Where are you going so fast?!
Tinfoil Hat by MalumLibrum958 October 10, 2023

tinfoil hat brigade 

A nickname for the mentally deranged members of the US State Department and the National Security Council who were all attempting to execute the smooth quid pro quo for Putin’s Bitch himself.
All of these superstars like Pompeo, Barr, Volker...and even the littler wise guys like Giuliani and his thugs...they are all part of the tinfoil hat brigade and will go down in history as such!

Tinfoil Hat Fallacy

A rhetorical fallacy where someone dismisses an argument, claim, or perspective by associating it with the stereotype of "tinfoil hat" conspiracy theorists, without engaging the actual content or evidence. The name references the trope of conspiracy theorists wearing tinfoil to block mind control—the ultimate symbol of paranoid irrationality. The fallacy lies in using this association as a refutation: "That sounds like tinfoil hat stuff" becomes a conversation-ender, as if the mere resemblance to conspiracy theory stereotypes proves the claim false. But the association doesn't address the argument; it just signals social exclusion. The fallacy is particularly effective because it taps into genuine fears of being seen as irrational, but it's intellectually lazy—it avoids engagement by invoking stigma.
"I raised questions about government transparency and corporate influence on media. Response: 'Dude, that's some tinfoil hat nonsense.' That's Tinfoil Hat Fallacy—dismissing by association, not by argument. Media consolidation is real; government secrecy is documented. But the tinfoil label lets them feel superior without engaging a single fact. The hat is imaginary; the dismissal is real."
Tinfoil Hat Fallacy by Dumu The Void February 28, 2026

tin foil hat club 

conspiracy theorists, whether the conspiracy is real or contrived. Usually convinced that whatever politician they dislike is a "reptillian alien" and that standard jet exhaust contrails are actually chem-trails of chemicals being sprayed down on the earth by the Illuminati.
The name originates from the belief that we are being brainwashed by mind control beams, and only hats made of foil or tin will keep the evil brainwaves out.
That guy over there is a card-carrying member of the tin foil hat club.

tin foil hat club by ghost3x7 April 20, 2009

Tin Foil Hat 

Tin Foil Hat, also tinfoil hat, or tfh, 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.
that guy is so paraniod he needs a tin foil hat.
Tin Foil Hat by bkdouble October 6, 2006