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

Organic Backpacking

Backpacking without planning and letting the world take you around. By doing this, you will experience and see things that doesn't happen often.

An organic backpacking trip in Europe.

by nonameafterall March 31, 2015

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

Dusty Backpacker

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."

by PizzzaDadddy February 26, 2018

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

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

Iraqi Backpack

When a female companion uses your scrotum as a condom over her tightly clenched fist before she inserts it in your rectum

Went to 7-11 for some smokes and bumped in to Tammy Lynn, bada bing bada boom 10 minutes later she’s giving me an Iraqi backpack! Really took me back to my youth.

by The original Balano July 16, 2019