the BAC 

The Boston Architectural College

Dude Wentworth sucks, I'm at the BAC

the BAC by Richard Papa November 11, 2008

The Back of the Worm 

A strange and magical place, which typically can only be reached through either a combination of large amounts of shrooms and the use of portable toilets, or prolonged exposure to the transcendent music of the band Phish. Phish guitarist Trey Anastasio was the first to describe the back of the worm; during a show in Amsterdam in 1997, in the middle of a creepy, ambient jam called Wormtown, Anastasio described to the audience his experience of being sucked into a public urinal and riding around on the back of giant worms. Very few others have been lucky enough to experience The Back of the Worm, but most of the people who have did so at Phish concerts.

I think you know where you are. ...YOU'RE ON THE BACK OF THE WORM! Seriously, though, stay away from those portable toilets in Amsterdam.

The Back of the Worm by RAGNAAAAAAR! June 20, 2010

plowin the back 40 

When vigorous anal sex is performed and sometimes causes the recipient to bleed.

Garrett : What's up with the blood stain on Keirsten's pants?
Jim : I guess Chad was at her house again last night plowin the back 40!

plowin the back 40 by SlopNChop May 19, 2016

The Back End 

The Back End is a mythical place in the United States Navy. It has been said that if you and your shipmates are able to achieve an impossible amount of maintenance/work you will be transported to The Back End and it is only here that you will then be “Hooked Up”. However it should be said that no person in the Navy has ever seen this place or knows of its whereabouts, even though all have achieved the impossible task required to be taken to this magical land!!!

If we can get all of our aircraft FMC and fly and 8 bird form flight skipper said we would get hooked up on the back end

The Back End by I R Hammer December 13, 2018

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

Junk on the back porch 

a term used by unhip father-in-law when trying to use the phrase "Junk in the trunk".

That girl looks good in those jeans, she got "junk on the back porch".

Junk on the back porch by Btown Carter October 31, 2018

The Backrooms

The Backrooms is a realm that first appeared on 4Chan. This realm is out of the boundaries of the real world and can only be accessed by nocliping through a floor or wall in a place that inspires deja vu or an uncomfortable feeling of nostalgia. It consists of a never-ending maze of yellow-ish empty rooms with beige carpets, old wallpaper, the smell of mildew and moldy carpets, and the faint buzz of fluorescent lighting.

Someone please kill me I’ve been in the backrooms for so long I just want to die

The Backrooms by Madison Gomez June 9, 2019