Back door

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 6, 2017

backs lit

backs lit is something you say when your weekend was lit. since the weekend is in the "back" in the past you say backs lit.

hey did you have fun this weekend?
yea backs lit!

by heyhey 77878 January 22, 2018

Back in the Ru

The ''Ru'' pronounced 'Roo' refers to any Ex-USSR Country. Comes from the 'RU'' in RUssia, the ''RU'' on Russian Car License Plates and the Russian internet addresses ending in .ru

Used mainly to describe RUssia, BelaRUs and Ukraine

''Ru'' can also refer to speaking the Russian language

Me: Im heading to the Russian Motherland on Vacation,
You: Back in The Ru so is it?
Me: Damn Right, gonna get me some Vodderz Vodka

by baileyyjau June 7, 2009

Gash-back

A flash back of some memorable gash a.k.a vagina. Was first coined at 4:25am on the 5th of december 2011.

e.g. I'm having a gash-back

simular useage to flash back but only refers to gash.

by Kai-pachi December 6, 2011

k-back

A small bump of ketamine. Is used as a noun.

I'm doing k-backs off an iPad, let's see Steve Jobs make an app that beats this!

by NationOfThizzlam November 22, 2011

Back Butt

When a gym rat flexes his back muscles giving off the appearance of a butt crack

Colin is such a frat star flexing his back butt.

by Collin has backbutt August 5, 2016

back wood

The act of laying prone on your stomach with a wooden dildo strapped around your waist, situated with the base on your back, facing up. Another person then rides the aforementioned dildo as though the prone individual were a trotting horse.

Cathy prefers doing back wood while in full English riding dress.

by Swiping Left October 6, 2019