Definitions by SexyMumma6227487
a bit of a one
When someone is considered to be a slag. The higher the intensity of the slag-ish-ness the larger the number at the end of the phrase.
Girl 1: "Ohmygod have you seen that Chelsea, she's a bit of a one?"
Girl 2: "Naa mate, she's at least a 3"
Girl 2: "Naa mate, she's at least a 3"
a bit of a one by SexyMumma6227487 February 19, 2009