(MarioKart def)
Where someone shouts at you, giving you unwanted advice, when your just having a bit of fun.
Stop shouting... You're such a Backseat Driver!
When your team member is dead and they try to tell you how to play Gulag
Person1: Bruh he was on your left you could've shot him easily....
Person2: Shut the fuck up you're being a Backseat Gulag
Two people giving each other oral sex in the back seat of one of their cars
Guy: So we could go get lunch somewhere, where do you want to eat?
Girl: Ooh I know! We could pack a lunch, roll the windows down and have a backseat picnic
having sex in the backseat of a car
Yo dude last night me and my girl got some backseat cab
Someone who cums really fast in the ass hole
“Hey was really a backseat cummer”
One not worthy of sitting in the front seat.
"Get to the back, you a backseat nigga."
Performing multi sex acts and positions in backseat of small car.
They were doing some serious backseat yoga.