Backpack pull 

The act of taking a plastic handle of only the finest vodka (ie. Heritage) to class inside of your backpack and taking handle pulls throughout the lecture with the plastic handle still inside your bag.

Jen:"Why do you have a handle of Heritage in your back pack?"
Steven:"Obviously to take backpack pulls to get through Fygenson's lecture"

Backpack pull by classless teenager December 9, 2010

Pullman Backpack 

A Backpack carried around by usually and undergraduate and underage student at WSU filled with a variety of beers and alcohol, but usually just Busch Light. It can be safely assumed that if one is seen after dark with a backpack on, they are lugging a Pullman Backpack to party hop. Not to be confused with a Pullman Balla Bag

"Why does Elijah have a backpack on at this party?"
"So he doesn't have to pay for beer, he's got his Pullman Backpack loaded with beer"

or

"Man, Ryan has every beer in his Pullman Backpack, lets hope he doesnt get blacked out and punch through a window!"

Pullman Backpack by Elijah H August 25, 2007