This is a prank were you would empty out somebody's backpack, flip it inside out, and place all the stuff back inside the inside-out backpack. Usually can be seen done at Evanston Township High School.
Guy1: Dude can you get me a drink
Guy2: Yea sure I'll be right back (guy2 leaves)
Guy1: Guys nugget his backpack
Guy3: Yea hand it to me under the table and tell me when he is coming
Guy2: (3 minutes later) He's coming
Guy3: Here put it back
Guy1: Dude WHAT THE HELL why the fuck would you nugget me!