Cop-Killer Bullet: Term used by gun control advocates to demonize any type of ammunition they determine is too dangerous for civilians to own. Often used side by side w/ 'Teflon Coated' which has no effect on penetration. Coined by NBC in 1982.
Plastic Guns: Myth created by gun control advocates and the media that Glock was manufacturing firearms made entirely out of plastic for the express purpose of evading metal detectors. A law was even passed in 1988 banning them (and attempted renewal in 2003 by the 'usual suspects') even though no such firearm exists.