A mid teen- early 20's female that chews lots of bubble gum, acts like a brat, and overdoses on Perfume. They mostly wear pink and white (not all), Dress kinda slutty and enjoy lesbian activities. They Drink Snapple and cheap corner store products.
The local Prump Girl wanted Jessica's Snapple so she pried it from her hands and ran off with it.
"Eww look at her, she's such a slut!"
"Yea she must be a prump girl..."
A woman who has put on a few pounds since the last time that a random 72 year old Uncle will say to Larry, the cousin twice removed, this kind of thing:
Uncle: "Golly! That's Suzanne? She has gotten to be a real Plump Sister since the last time I saw her."
Larry: "Must've been back in the Seventies. Before the kid. Kids. Who knows."
Uncle: "It was May 1979. When they got married...wow she just blimped out!" Larry: "Total butterball. Plump Sister, shame."