A backpack barbie is a motorcycle groupie, particularly a woman of model caliber who likes to ride passenger on motorbikes.
Hey bruh, I need me a backpack barbie for this upcoming motorcycle magazine photoshoot.
Shorthand for perishable food left in non-climate controlled storage such as a backpack or trunk of a vehicle.
Emilio ate some backpack chicken and was sick af for a week.
That skatergirl looks like a backpack bisexual
When the smaller parter in a relationship is big spoon
Person 1: You can be big spoon tonight
Person 2: Awwww, why?
Person 1: Cuz I want a cuddle backpack
When you take your sheep on top of your roof and violently engage in coitus
Neighbor: hey what are you doing Tony. Tony: nothing just taking my sheep backpack for a test drive
neighbor: gross
Meaning that you can see someone's butt crack or underwear slightly as a person is bending over similar to the zipper of a backpack being slightly open.
(Emily bends down to grab books) Me: Hey Emily you've got an open backpack
Emily: Did you notice my new Victoria's Secret thong?
Me: No I was just looking at your crack.
Emily: You're an asshole.
Me: LOL get it?
Dry anal. The receiving partner stands while the giving partner sits on a table or high chair behind them. The giving partner wraps their legs and arms around the receiver, who then steps forward and carries them like a hiking pack. Penetration ensues.
Popular among feminists and power bottoms.
"I gave Jill a dusty backpacker last night. We ran out of lube but she's been doing squats lately so it turned out alright, dude."