Top definition
someone in 3rd grade who steals all of the red crayons and markers. A blue jacker is someone in 6th grade who steals your blue.
Hailey: I like red, I'm gonna pick up the crayon and color with it

Dominic: Dude that red is mine (takes red)
Hailey: Dud you are such a red jacker
by wormy4evanobutterflies December 06, 2010
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug