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A person who is someone you know and are "friends" with, but isnt treated like a friend. You are treated like an acquaintence. This is a person one only talks to when their actual friends are away. The person who is the back-up friend is treated poorly and is usually someone who doesnt have a lot of friends or gets a lot of dates. The backup friend is someone who gets the short end of the stick when it comes to friendship. The person who sees you as a backup friend doesnt care about you and isnt concerned with any part of you as long as you are someone they can come to when they want to converse with someone when their real friends have disappeared.
You see someone who you've been friends with who you havent seen in some time, but you want to invite them out for a drink or dinner and they all of a sudden ignore you, yet they were really chatty with you several months earlier. A clear sign you are a backup friend.
by Urbanbee75 January 10, 2009
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2
an acquaintance that is only spoken to when all of one's real friends are absent.
A: Why were you talking to Erik that other day?
B: Dude, he's just a back-up friend. nobody else was around worth talking to.
by assgoblin82 January 30, 2007
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3
A friend who isn't really part of the group, but who you hang out with when the rest of the group is gone.
Why isn't Kailyn paying any attention to Meggie?

Oh, Meggie's just her back-up friend. She's talking to Ashley right now.
by Sleet October 22, 2009
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4
a friend who you use as a backup while your real friend is absent or gone or away at the moment
yo did you see jessica she was hangin with her backup friend lena only while amanda went to the bathroom then she started talking to amanda again what a bitch!!!!
by dickenz September 14, 2007
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5
someone you are friends with, but doesn't make the list(first cut, VIP, ect) for an activity, and then is called upon to fill in when a "Real friend" cannot be there
1)Hey did you enjoy the party?
Nah, i didn't know there was one.:(
Oh that's right, because you're a BACK-UP FRIEND! HAHA

2) Hey man, i can't make it tonight. Call Drew, you know he doesn't have any real friends.
Hey Drew wanna come to the party tonight?
YEAH SURE MAN, THANKS FOR INVITING ME.
by Tim Horlacher May 17, 2006
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6
A person you are friends with, but is treated poorly, and is talked to when your friends are absent. The person who sees you as a backup friend does not care about you, and you get screwed over.
Since Julie ignored Corrine's text about a sleepover, Corrine got the sign that she was the backup friend, because Julie asks her to do things very seldom.
by Kailey12345 April 10, 2017
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