Backsex 

the act of wen a guy is sitting on the ground, bed, or couch with his legs spread and his girfriend or otherwise sits leaning against him sitting just so her back lays right in the crook of his crotch. this usualy causes the guy 2 develop a boner.

I saw kyle poking his dick into julie's back! haha! they where having some hot backsex!!!

Backsex by penelopedark<3 October 4, 2010

Jonas Backsex

Term used to describe when any of the Jonas Brothers are touching backs while performing. Usually between Kevin and Joe, whilst Kevin plays guitar and Joe sings. Orgasmic.

I would give anything to be in the middle of some luscious Jonas Backsex.

Jonas Backsex by Lady Joner March 12, 2009

Backseating 

In a stream, telling the streamer what to do instead of letting them take their own decisions

I'm not going to do a genocide run, stop backseating me

Backseating by Bonaaq February 19, 2021

backseat boogie

Sex in a car seat.

Ben Dover was doing the backseat boogie with lovers all summer.

backseat boogie by I, Wreckerrr November 16, 2016

Backseat Gamer 

Like a backseat driver, a backseat gamer is a person who tells you what to do in a game that you're playing while you're playing it.

"No, shoot that guy! Not that one, that one! The other guy!"
"WILL YOU STOP BEING A BACKSEAT GAMER PLEASE?"

Backseat Gamer by NINJA_CARROT July 11, 2009

Backseat DUI 

A backseat DUI occurres when a sober person is driving an intoxicated person home, and the intoxicated individual is giving the driver shitty directions, and false instructions to turn, and then saying "No, No, not this street..."
This causes the driver to speed up, slow down, and begin to turn, then swerve back into the driving lane, leading others observing the vehicle from the outside to believe that the driver is DUI.

"I was driving Marcus home the other night from the local water hole and he kept telling me to turn and shit and I was all over the place and then I got pulled over, but it was cool, the cop realized Marcus was just backseat DUI."

Backseat DUI by Mike McLovin March 16, 2008

Backseat Fruity Loop 

Backseat fruity looping is a sexual act wherein one partner applies a colored, sweetened substance to their lips and then proceeds to 'loop' the other partner's rectum with the substance, by pressing their lips against their backside.

"Lex backseat fruity looped Jordan's asshole the other night. He shat green for a week."

Backseat Fruity Loop by Darkbat420XXX September 25, 2011