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
Get the Open Backpackmug. A term normally used as an inside joke to refer to a fat, ugly, douchie, male who has no idea you are refering to him.
(Right in front of the overstuffed)
Samantha: The overstuffed backpack gained some extra books today
Marissa: Yeah, some huge textbooks!
Overstuffed Backpack: WTF?
Samantha: The overstuffed backpack gained some extra books today
Marissa: Yeah, some huge textbooks!
Overstuffed Backpack: WTF?
by nmgirl February 22, 2011
Get the Overstuffed Backpackmug. 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
Get the Organic Backpackingmug. During a blow job, you do not tell your lady friend you are going to cum. As you are expelling your man goo and filling up her cheeks, you say, "Yum, yum, yum, delicioso."
Since Bob was stuck watching Nickelodeon with the kids, he gave his wife a Dora Backpack when she got back from yoga class.
by Sancho Long December 8, 2011
Get the Dora Backpackmug. Back pack lint is where bit of pieces of paper, cardboard, and useless school items reside at the bottom of your back pack. Usually really annoying to pick out, but really curious on how all this lint got there.
by Zoleta? January 23, 2009
Get the backpack lintmug. The act of holding your partner's legs over your shoulders, while you hold their feet, like a backpack, and they are giving you a rim job.
by anonymous124kittykittylicklick February 5, 2012
Get the Human Backpackmug. by Billie Yuan May 30, 2005
Get the Backpack Backmug.