Showing off a new (or "new to you") vehicle by driving it around the block (neighborhood/park/lot) continuously. It is a shortened form of "grandstanding." Term is typically usually used in the Southeast by adults who grew up in the 80's.
Regular kids:
A = Great
B = Good
C = Average D = Okay
F = Bad
Asians:
A = Average
B = Below average
C = Can't have dinner
D = Don't come home F = Find a new family
Asian: *crying*
Other kid: Why are you so sad?
Asian: Cuz I have a B+!
Other kid: Well I have a C- and my parents think that's pretty good Asian: On the Asian grading scale, B's are below average Other kid: Sorry