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

Backpacking without planning and letting the world take you around. By doing this, you will experience and see things that doesn't happen often.
by nonameafterall March 31, 2015

by TheCarryOfJoom March 26, 2010

A backpack person is someone who travels to your metro area via train or bus.Walks around with a backpack usually full of drugs to sell to the new area they have wandered to .
by Baked Rye bread March 16, 2017

A backpack barbie is a motorcycle groupie, particularly a woman of model caliber who likes to ride passenger on motorbikes.
by The most Ballinest man ever. September 1, 2021

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?
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

by BettyWhiteWashed August 29, 2020
