The act of letting your foot off of the break at a red light, rolling forward in anticipation of the light turning green.
"The other light's turning yellow, pre-roll it so you can burn this guy"
"Man, don't pre-roll this light. You're gunna get caught in the middle of the elft turn signal"
A marijuana cigarette, already rolled. Usually refers to a hoot route.
I have a six pack, a couple pre-rolls and I'm ready to go.