lamb rack 

a word commonly used by chavs to describes the ass of a girl who they have seen recently.

james ; yo you see murds new bird?

dan ; nah fam, what she look like do?
james ; the usual, blond caked with make up and only wears northy
dan ; anything different?
james ; raa she had the thickest lamb rack id ever seen fam
dan ; yo i gotta see this bird now

lamb rack by the_sesame_bagel April 12, 2020

Rack of Lamb 

A young woman with large attention-getting breasts.

Walking down the street...
You: Yo, check out that rack of lamb
Friend: Yeah, I hope she's legal and not jail bait.

Rack of Lamb by FJM November 25, 2007