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To go behind someones back and betray them
Mike accused me of trying to backdoor him and talk to his friend
by 1kblack October 18, 2019
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Jun 24 Word of the Day
An exclamation made when your friends or family are teasing you to a point where you can't handle it anymore and a hissy fit is in order.

Derived from a YouTube user's famed outburst following Britney's lackluster performance at the 2007 VMA's.
Sarah: 'OMG Susan, I can't believe you are wearing the same skirt as yesterday. Oh, and by the way, EVERYONE knows what you did with Kevin on the weekend. Plus you look a little fat, are you retaining water?'

Susan: 'LEAVE BRITNEY ALONE!'
by Billy Chickenhole September 15, 2007
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2
To enviously kill a friend or someone who trusted you unbeknownst to them
Why they backdoor dude like that I thought that they was cool
by Ragly March 09, 2019
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3
To cut someone out of a transaction (e.g. drug deal, embezzlement, etc.).
Minerva: I was involved with embezzlement and he was too. But I wasn't gonna back door him and cut him out!
by ZXY&ABC July 22, 2019
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6
Back door

1) A secondary entry/exit door, normally located at the rear of a propety.

2) A slang term for the anus
1) Glenda's back door was jammed shut, so she had to call the locksmith in.

2) Tom fucked Glenda, up the back door
by Coffee_addict July 18, 2004
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