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3.
A really, really bad thing, person, situation or experience.
You've got arrested for a DUI yesterday?!?!?!?!?!?!

That's totally backseat, man
by Mario Bruno December 17, 2006
 
1.
Area of a car where fucking occurs.
I tossed my girlfriend into the backseat of my car and ripped off her clothes.
by Travman December 03, 2002
 
2.
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!"
by Bungalow Bill July 29, 2005
 
4.
part of the car where you go with your bitches
big backseats are just an excuse to bang fat chicks
by Zoobafoo March 11, 2003
 
5.
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.
by bjtuna December 21, 2006
 
6.
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.
by mangus May 24, 2004
 
7.
Backseat is when something is horrible and sucky. This makes perfect sense because no one likes to sit in the backseat, and sometimes nasty things happen in backseats. This will catch on in the near future.
You're soooo backseat

Yo momma's backseat

Don't be a backseat person
by Bitsy-Boo December 18, 2009