When you have one traumatic event that causes you to lose most/all of your documents on your computer that you go nuts and start archiving everything you have, just in case. As a result, the most mundane files that have no bearing on life are saved in triplicate.

Often, these individuals with backup religion often tout their "superior" beliefs and practices much like an elitist or a jesus freak. Don't be around one of these people when your computer crashes and you don't have anything backed up; you will only get an "I told you so."
Jim: Dude, why does it take Steve so long to shut down his computer?
Bill: Steve lost all of his work files a few weeks ago, now he always creates a copy of his work onto his thumbstick, external hard drive, and even uploads things to an online service. This guy is crazy.
Jim: Man this guy has a bad case of backup religion.
Steve (whispering as he finishes up): all set and....amen.
by Reverend Walk July 6, 2011
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A friend who you use as a backup whenever your friends aren't around
"Shes only using her as a backup friend, so fake!!"
by Yelvet September 25, 2020
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Backup dancer – a man who is trying to enter the limelight even though he is simply someone’s side-man.Not considered part of the main crew or ensemble, he is a simply a backup dancer.
Whilst backup dancers tend to be attention seekers, they are best ignored
“Oi Crispy Grant, how you gonna come flex round my hood when you iz just a backup dancer?”
by WhackBoi March 2, 2016
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People who take the sides of their closest friends in arguments on facebook regardless of the topic. Most commonly occurs among ex bfs/gfs and their respective cliques.
(FB Picture of Sam's Ex GF Monica grinding on some dude)

Sam: Wow, I see you've been staying classy.

Kate: HAHAHA yeah right dick, bet you wish you were him!

Claire: MONICA WAS ALWAYS TOO GOOD FOR YOUU!

Amanda: I don't feel like you have any place here Sam.

Sam: I guess not, as I see you brought your facebook backup.....
by M1lesmanifesto January 23, 2012
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I think it means your cheater account
He had a backup Instagram when she shut down his main account, so he could keep seeing other girls/quys
by uuuuuuuuuu February 27, 2014
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When a fellow bro or friend is in a socially awkward situation and is outnumbered and calls for your help
Austin: "Dude, 4 rando's just sat down at the table with us. We're outnumbered."

Ryan: "Bro backup has arrived."
by outlaw0897 July 14, 2010
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Ur ho you keep on the side away from all your friends so you can move out of the state if shit hits the fan and you'll still have pussy to fuck
Person 1: hey what are you up to?
Person 2: fucking my backup bitch
by Pickabooo January 10, 2007
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