sheep 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

by Richard Beater September 16, 2018

Open Backpack

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?

by mastablasta5000 October 21, 2011

backpack barbie

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.

by The most Ballinest man ever. September 1, 2021

Heavy Backpack

Used by a Eugene, typically the day after they snap. The backpack is heavy due to the AK.

Oh no, Eugene has a Heavy Backpack.

by Meememeem January 22, 2019

Cuddle backpack

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

by DJB1GC December 10, 2019

backpack bisexual

A tomboyish bisexual

That skatergirl looks like a backpack bisexual

by BettyWhiteWashed August 29, 2020

Australian Backpack

A sex act in which a male is mounted by their partner in a "piggyback" style, wrapping their legs around the the front of the body, and masturbates the male with the arches of their feet (to completion).

My quads are exhausted after that Australian Backpack I got from Meghan last night

by megsydmillard May 4, 2016