-See 'Safety'
-Also see 'Safety'
by Funky T. Garfunkel December 5, 2003
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Someone who has frequent sex, with anyone who will stoop low enough to fuck them, regardless of physical appearance and/or hygiene.
"So I heard you're dating that new waitress..."
"Yeah, why?"
"Dude, she's a doorknob -- everyone gets a turn. I tagged her twice last month. I saw your dad coming out of her apartment yesterday."
by Dharma Midget July 2, 2016
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A complete idiot who doesn't have a clue about anything.
A: that new song by greenday is awesome!
D: whats greenday
A: you're such a doorknob sometimes
by superwomin July 29, 2005
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This is what you say when someone else farts and you notice it before they say saftey ,you say doorknob. You can punch them until they toucha doorknob.
by The clit commander April 10, 2003
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Deadpool's name for his guns.

A recurring gag of Deadpool's is when he calls his guns "doorknobs", only to confuse both allies and enemies.
"Doorknobs don't kill people; I kill people." ~ Deadpool
by Merc of a Mouth January 8, 2013
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A farting game. When someone farts who is playing the game, he/she must say "safety" before another participant says "doorknobs." If "doorknobs" is spoke before "safety," the farter can be punched in the shoulder unless said farter touches a doorknob. When played by veterans, the pre-fart safety, "pre-safety," can be employed for no more than two minutes to allow for those times of uncertain gastric distress.
Me: <fart>
Other: "Doorknobs!"
Me: Moves toward closest doorknob too slowly.
Other: <smacks me in the shoulder hard>
Both: Laugh.
by Project Specifications August 6, 2012
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