"Plump" means "having a full rounded shape" and "slightly fat," according to Oxford Dictionaries. "Girls" are female children. Together, these words mean "round and slightly fat female children," as depicted in the .GIF file.
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 wirl, usually between the ages of 12-16 who will do various annoying things to gain attention such as laughing very loudly and unnecessarily, asking questions with obvious answers, basking in their "randomness," and telling completely idiotic irrelevent stories.
Pump-Your-Gas-Girl: It's so cold in here! Why is it so cold? OMG.
Person: Uh...it's December and you're wearing a tank top?
Pump-Your-Gas-Girl: Lyke omg, I'm so random. Haha i'm retarded. (did I gain attention???!!!)