It's a slang for the term anal. Meaning you put the male genitalia into the female's rectum.
E.G for key to the backdoor:

Male : I'll give you the key to the back-door baby!
Female : I'm not that dirty thank you... I don't like anal.
by Husky123654 December 16, 2014
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Used by police to refer to the battering ram used to smash open doors during search warrants.
Before the warrant, have you got the key to the city ready?
by Noob master March 28, 2021
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Various meanings depending on context. Some are; to leave somewhere, to go into town and also to hang around outside a closed key-cutting shop offering to sell keys at extortionate prices to people in dire need of them.
What shall we do today? Key tout?

I believe that man's a Key Tout!
by Dafe July 06, 2003
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When you finally get the most likes on the "daddy's little fidget spinner" copypasta out of all your friends, so you become the most liked in your group. This makes you the daddy of your school/workplace.
Friend 1: Dude, look! I got 500 likes on my post of that dumb copypasta!

Friend 2: Yo, you gotta be the key turning penis now!
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Key West Bitches are your typical sad hoe.
They do not particularly have much better to do, so within that time they may talketh tons of shiteth.
They hate 24/7 for reasons that have not yet been discovered.
Not all of which who reside within the tropical location of Key West, FL are indeed a Key West Bitch.
You may have other species of these also in your local hometown.
Jan: "Are they going to do anything else other than stare and talk shit?"
Mary: "No Jan, they are Key West Bitches, thats what they do."
by Ttinkyyy October 11, 2020
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The biggest fiend school where everyone is addicted to flash drives and stanky flowers.
Damn that hoe Savannah Cole from Key West High School is a big booty bitch her ass must be really stank XD
by BIGDICKDADDYKWHS69XD March 10, 2019
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My way of saying 'kid'. ex) like omg kid "key-yid-aa" whats wrong with you?
I made one, this is just a message, OMG!

And sonce i have to use the word in a sentence here you go: key-yid-aa.
by Nacho™ October 02, 2006
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