backpoo 

n. Soiling of the back with feces, typically used in the context of an infant who has overfilled a diaper while supine. May be considered a variant of code brown.

Mom: Sweetie, can you change the baby? He has backpoo.
Dad: Sure, hon. That's a whole outfit change he'll be wanting.

backpoo by D@d June 29, 2007

Wessex Backpoo-Hedgehog 

the act of sex when you shit on your partners back and tell him/her that this cute little hedgehog lives there from now on

Ist it ok if i give you a wessex backpoo-hedgehog tonight? i have already bought the salt-sticks

Wessex Backpoo-Hedgehog by Nascimento June 4, 2018

Backdoor Season 

A season or interval of time in which Tragic events or betrayals occur over the span of the season with words like "shit get tragic" used to announce these events, additionally one may ask "what was the reason" to try to better comprehend the tragic event that just took place.

"Bro shit get tragic, Backdoor season"
"Bro is Backdoor season you know shit finna get tragic"
"Oh shit its Backdoor season Shit get tragic like what was the reason"

Backdoor Season by blumast164 May 17, 2023

Backpoon 

The anal region in sex.

Bend over, time to dip into the backpoon!

Backpoon by I, Wreckerrr November 9, 2016

The backrooms

If you're not careful and accidentally teleport out of reality in the wrong areas, youll end up in the backrooms. Here, it is nothing but the stink of old, moist carpet, the madness of mono-yellow, the endless backround noise of fluorescent lights at maximum hum-buzz, and about 800 million square miles of randomly connected empty rooms where you are trapped. God save you if you hear something wandering around, because by that point, it already knows you are there.

Someone help, ive teleported to the backrooms.

The backrooms by Thanos Wang May 18, 2019

Backdoor 

To go behind someones back and betray them

Mike accused me of trying to backdoor him and talk to his friend

Backdoor by 1kblack October 18, 2019

Backdoor 

When the location of an unsuspecting person is acquired, typically through their “friends” or a girl they might know. This location is usually given to the opps in order for this unsuspecting person to be set up, robbed, and sometimes killed. Lil Durk on his feature for “Top” says “Your close homie’ll try to Backdoor you if you let him”

Person 1: Bro U gotta watch your back I heard your brothers been tryna set u up

Person 2: My own homies tryna Backdoor me? Fake ass niggas man!

Backdoor by CloseThatBackdoor January 25, 2021