back seat 

to "take a back seat" is to assume a non-participatory role on an issue or situation.

"I'm sick of taking a back seat about things that go on around here. I'm gonna say a few things at tomorrow's meeting!"

back seat by Bungalow Bill August 25, 2005

back seat 

In alpine skiing, being in a position where one's center-of-mass is shifted toward the tails of the skis instead of toward the tips. Results in reduced control, adaptability to changing terrain, and ability to make a full turn.

I hit that rut hard and got thrown into the back seat.

back seat by bjtuna December 26, 2006

back seat 

A term used to reference a person's butt, particularly a woman's butt.

I'd love to be the thong in that back seat.

back seat by mangus May 24, 2004

Back Seat Syndrome 

The curious phenomena by which men traveling in the back of large jostling vehicles (busses, vans, ect) tend to achieve spontaneous erection due initially to the jostling of the vehicle and then secondarily to the jostling of their own wood against their legs and/or pants. This erection can often be relieved only by extrication from the back seat.

Cody: Holy cow have I got a case of Back Seat Syndrome.

Matt: Boner city?

Cody: Worst ever. Switch me spots.

Back Seat Syndrome by Lord Azaldon April 18, 2013

Back Seat Tom

Masturbating in the back seat of a car, with your parents driving.

So i was driving down the road and i looked back and saw Tom Lewis back seat tomming

Back Seat Tom by Fike Moster January 10, 2009

back seat bingo 

When you and your better half make out or more in the back seat of a vehicle

Girl: Would you like to play back seat bingo tonight by the lake?

Guy:Heck yea!!!! I just got the back seat, of my whip, reupholstered.

back seat bingo by daddybigbuks September 11, 2009

Back-Seat Stain

When a Sneakers O'Toole look-alike has a cab service from school to the club. Sneakers O'Toole then lets every chick in his car drink, and inevitably, they spill some cranberry/vodka on his seat. Sneaker O'Toole will get the drink stain confused with a Virginia Slim stain.

Sneakers: Yo man, I'm gonna have to run by the cleaning section. Someone spilled some shit in my car. Now I think I have the Back-Seat Stain

Grinnell: Actually, I think it may be a Virginia Slim stain.

Sneakers: You know... that may actually be what it is.

Sid: What the fuck!! Hahahahahahahahahahahahah!!!!

Back-Seat Stain by Grinnell April 18, 2008