A girl from a midwestern small town, usually seen driving a 1998-2002 Pontiac Grand Prix. Generally she is overweight and often is seen wearing too tight of leggings, Mt. Dew pajama bottoms, or sweatpants with slogans on the ass. She frequents local stations, and she most likely smokes cigarettes or vapes. (Opt. may be a drug addict).
"That girl over there looks like a Pontiac Girl"

"Look at that chick up front, paying for cigs with loose change....just your typical Pontiac Girl.
by Questions? February 20, 2019
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