Aluminum Foil Hat - See: Tin Foil Hat.
Black Helicopters -
Jack Booted Thugs - Also, JBTs.
Tin Foil Hat - An accusation that the target is exhibiting
psychotic-level paranoia. Seems to have originated from a real
delusion by some mentally ill person that, a foil hat (shiny
side out) would deflect the mind-control rays from the CIA or
whomever was being blamed for voices and other symptoms. Someone
has made a joke site here,
specifying aluminum foil.
UDP (Usenet Death Penalty)