What is Heat Check?
1.
Attempting to do something extra difficult when you're on a roll.
Dan: Dude, you launched that trey from halfcourt.
Jermaine: It was just a heat check man. I was feelin' it.
See
2.
A pattern of erratic driving used to determine if one is being followed by police, usually consisting of a series of turns and stops.
Steve: Why did you drive through that guy's yard?
Mitch: Just doing a heat check.