a child leash. typically comes in the form of a stuffed animal with a harness attached
I saw a lot of unruly children running around at the mall. Those parents really could do with some monkey backpacks.
a derogatory term used when someone intends to inflict pain upon someone else.
you didn't just steal my sh*t! you backpack toilet paper!
That little dance move you do when you're trying to take your backpack off your back
I walked in to class late, so I had to quietly do the Backpack Wobble without looking ridiculous.
In order to smuggle marijuana an individual places a bag of weed in another's anus and then pounds it in with his penis.
In order to get weed out of the Caribbean, Turbo gave Austin a Jamaican Backpack.
It was her time of the month so I stuffed it in her furry backpack instead.
Refers to a huge affectionate squeezy-clasp whereby you wrap both your arms and legs around da person, so dat you are suspended off da ground from da other person at four attachment-points, like a strap-on bookbag.
Backpack hugs are awesome; just make sure dat da person whom you're giving one to is large and physically strong enough to safely support your entire body-weight like dat.
A person who rides on the back of a motorcycle is a "backpack"
A motorcycle backpack is a person who sits on the passenger seat of a motorcycle.
Girl: I wanna be a backpack so bad
Guy: hop on the back of my motorcycle