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used to describe a promiscuous girl who likes to have sex in the back of a car. This is a rather old expression
two girls are jealous of a popular girl so they start a rumor that shes a "backseat betty".
by synthetik_smurf August 15, 2005
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Apr 24 Word of the Day
A cultural and aesthetic mind-state that prioritizes making money, even as an “underground” or “radical” creator. The work isn’t made for money, but it’s the money that matters the most.
“Dude, his stuff is pretty out there but he’s still pretty Finance Punk.”
by Pop Pop Bienstock April 01, 2021
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2
A female who frequently has sex on the first date or first encounter.
Britney: Hey Lohan, did you call that guy we met at the coffee house yesterday?
Lohan: Yes, we met for drinks and well sex this morning.
Britney (laughing): Sometimes you can be such a back seat betty.

Nicole: Paris, did that guy give you a ride home from the club last night?
Paris(smiling): Yes, you could say that he gave me a ride last night.
Nicole: Your family should have been in the automobile business, because you are such a back seat betty.
by atisha v December 17, 2007
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3
Someone who frequently has sex on the first date or first encounter.
Jan's friends refer to her as back- seat betty because of her many one night stands.
by mariy November 11, 2007
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