A person who rides your back so hard you need to pry them off. Often a co-worker, teacher or manager in professional settings but could also be a significant other, semi-friend or admirer in social settings.
Rick was tagging along with us at the club last night. He just followed along behind me all night. I'm not taking him out anymore. He's such a backpack!

Or,

My boss just looms over my desk all day. He's constantly riding me. What a backpack!
by Original Dave July 15, 2011
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(n) A person that contributes nothing but an overall dour disposition. Typically univited, but tolerated out of a sense of pity.
Dude, that Chris guy is becoming a real backpack! He just shows up and waits for us to entertain his sorry ass.
by Vaness July 11, 2005
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Hey, Joe. Did you hear that new rap song by Lil' Fo'Sheezy?

Fuck, no. You non-artistic cunt. Only People who hate music would listen to that mainstream bullshit. I only listen to backpack rap.
by FagginBlagginBloodleDoodle October 13, 2009
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When a male has a rather large quantity of dip in his lip whilst fucking his female partner. The male then proceeds to eat out the females anus and secretly slides the chaw into the woman's anal cavity. He then shouts "Its chew thirty bitch" and proceeds to dominate her butthole with his cock giving his penis a tingling sensation from the tobacco.
Carsten: Dude im bored as shit right now.
Brett: Same dude lets go backpack the shit out of the fab five.
by Backpack Bandits March 6, 2011
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A stupid term used to describe anyone who listens to hip hop (not just white suburban people as commonly referenced) that dislikes "commercial" hip-hop just because it is commercial and likes "underground" hip-hop just because it is underground. Basically, its kind of an inside-joke insult attempting to diss hip-hop fans that oppose music that is related to a capitalistic system, even if the music is actually good. This is not the original meaning of the term but rather the definition (or semi-"insult") it has turned into.
by dont want to say April 23, 2006
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The emo kids of the hip hop culture
I listen to atmosphere, "f*ck you lucy", that's not emo, I don't know what is
by Jeff April 23, 2005
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A storage device worn on your back that usually weighs around 20 pounds
"Honey, your backpack is soooo heavy!" said mom.
by 1234GamerTroll4321 October 30, 2017
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