the term backup peen derives from that random guy jacking off in the back of porno flicks. He's just standing there and isnt actually involved and has no input. This term is used to describe a person who has no input and is just hanging out doing nothing and is just following someone else or it can be someone on tv whos in the background and isnt involved, same thing.
"Yo when i was gonna get in a fight with BJ he had his little sidekick Frank standing next to him doing nothing, he thought he was so tough." " Yea man, god damn backup peen"
by bujeah November 12, 2003
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The act of watching porn on the internet while having myspace,facebook, or some other dumbass site open just incase someone walks in on you an in that event you can switch to the other window..
Kid sitting on computer wackin off to porn

Footsteps of death moving closer kid clicks myspace next to porn hence the "Minimize Back Up Plan"

Kids mom enters ya you can just get up honey i just need to check my email real quick you don't even have to close what your doing

Kid fucked!
by blackout2921 October 14, 2009
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when traffic has ground to a halt or crawl for many miles, usually due to rush hour, heavy construction, or a bad accident.
I'm trying really hard to make it to the show on time, but traffic on I-85 is backed up to West Buttfuck!
by Mike Francisco August 21, 2008
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Expression used betweem white people
who tend to adhere to black culture.
Nigga Whitish is the equivalent of
"wigger". The association of words
is used as a greeting or when two
don't agree on something.
1. -Hey Jonny?
- Back up nigga whitish? What did you
think of Eminem's latest work?

2. -Hey Joey, you got some dizzle fo' me?
- Back up nigga whitish. I ain't got
shit.
by Makio a.k.a Tudor N. September 27, 2004
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“i can do this all day~ back it up back it up”
Make a wish - NCT U
“Back it up bbygirl😩🥵💨❤️“
pushing my ass or the kpop music?”
“what”
“what”
by FuckSM October 29, 2020
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Expression used to show thanks or appreciation for something someone has done for you or it can be used after a business transaction has taken place.
Person doing favor: I got that green you wanted.

Person receiving favor: Back that up dawg.
by RAD-DADE February 24, 2009
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What a guy says to a girl he's fucking from behind - asking her to push her ass back so she grinds onto him.

Also, in lesser used context, it means a girl has a nice ass.
*A couple doing it doggy style*

Chrissy: "Oh that feels so good!"
Tom: "Oh yeah, you want it harder?"
Chrissy: "Yes!"
Tom: "Back it up, back it up!"
by TJackson July 12, 2008
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