When smoking weed one calls back door and after the person loading the bowl takes his/her first hit the person who calls back door gets next hit, and the rotation goes from there.
Person 1: I call back door.
Person 2: No I already called back door when we were in the car. :
Person 1: Awww fuck.
by Emphazima November 15, 2007
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to leave a pub/club/party early to go home to bed without telling anyone.
sam; where's nick gone?
dave; oh, i think he has just back doored it, he has been being a bit of a girl tonight.
sam; god, he always has to back door it, what an idiot, i have just been to the bar and go thim a pint!
by sam-mac August 9, 2007
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When someone you trust sneakily takes your girl, job, friends.
He was my friend and then totally back doored me with my girl
by Yadf January 7, 2017
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1. while freestylin with your homies and you boi falls off you continue from where he left off..thus back door

2. when you or sombody go right behind sombody else back and holla at there girl
maan dat negro just back doored me on the slide
by skylar April 25, 2004
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