The expression used when going for a sweet ass ride, or drive, in a vehicle with all your smokin' buddies && gettin totally ripped, doin crazy ass shit like dougnuts in snow &&ice. Usually sex follows, and food right after.
"Yo man, you up for Burn Run to the Mountains?"
"Hey i got a Q and new water bong...up for a nice burn run?"
"Yo, you gotta check out the new wheels on my car, so lets head out for a burn run." "yea man lets go. I got an ounce."