What is light stick?

A USB drive that can carry information in varying increments. It is plugged into the USB port of your computer.

I put my English paper on my light drive flash stick. That way, I can work on my paper at home.

light stick - video

“Light stick” is what Dean Winchester calls a lamp in 12x11 of the CW show supernatural

Dean Winchester: “This is a… a… a… light stick!”