backpack friend 

Friend that is always freaking following you, won't get off your back, won't leave you alone, up your butt( not in a sexual way) all the time and won't give you space.

Jeremy is such a backpack friend to Seth, he never leaves him alone.

Reilly stop being such a backpack friend!

backpack friend by Danillawafa January 6, 2018

BackPack sex 

Having sex with a backpack buy opening the zipper and sticking your junk in that compartment

"Dude, did you bang that chick?"
"Nah man, I got really drunk and wound up having backpack sex!"

BackPack sex by The Reactor October 1, 2009

Backpack pull 

The act of taking a plastic handle of only the finest vodka (ie. Heritage) to class inside of your backpack and taking handle pulls throughout the lecture with the plastic handle still inside your bag.

Jen:"Why do you have a handle of Heritage in your back pack?"
Steven:"Obviously to take backpack pulls to get through Fygenson's lecture"

Backpack pull by classless teenager December 9, 2010

Backpack Flipping

The art of having ones backpack flipped inside out. In contrary to the popular term "Nuggeting". When a backpack is flipped where is the nugget. I looked all over for it and I could not find it anywhere. I searched inside of the backpack and I searched outside. I was really hoping to find a nugget cause I was pretty hungry at the time.

I take part in Backpack Flipping

Backpack Flipping by Backpack Flipper May 27, 2007

Backpack Faggot 

A giant homosexual, faggot, queer, etc.

Damn, that kid is such a fucking backpack faggot

Backpack Faggot by THERAPADDICTBADDERTHANUBACKPACKFAGGOTS May 10, 2008

backpack girl 

The business class girl at the party that wears enough makup for ten hookers. Usually enough ass to satisfy the entire crowd. She wears a backpack hoping to hook up and stay at some poor shmoe's house over night, thus the backpack.

Usually blondes.

backpack girl by OTF June 27, 2004

backpack-o-matt 

referring to Matt Gibbs' five year old back pack

it says backpack-o-matt

backpack-o-matt by cHris February 11, 2005