A Girl, usually of large nature, whose body is so disproportionate it can only be described as "Badum-Pum". Said girl is also usually a compulsive liar, wears an obscene amount of make up and dresses like a transvestite.
girl one: "Did you see badum-pums new myspace pics?"
girls two: "Chyeaaa, ew she's so gross!!"
girl one: "where's her vag?"
girl two: "It's tucked under all her fat."