When smoking marijuana in a pipe, bong, or vaporizer and you have finished the bowl you must empty the bowl and refill it with bud. This is referred to as a rebowl, or rebowlling. The term was originated in a vaporizer session between 7 high school students on April 20th 2005 (4/20, 420).
person 1: "This shit's not hitting anymore."
person 2: "It needs a rebowl, man."
"This bowl's done.... REBOWL!"
when smoking marijuana and you finish the bowl and you want to smoke more, you empty out the bowl and thats called rebowling. and it was not originated on 4/20 2005 it has been around for a long time.
yo dawg the weeds done lets rebowl