Girls who eat carrots
An idiom illustrating young ladies who "hop" from shallow relationship to shallow relationship with well off men, primarily for gifts, especially jewelery (carats, karats).
Mortimer: I saw Winthrop and Billy Rae at the club with Bunny and Muffy last night. Randolph: Oh no! We must cock block that, they're girls who eat carrots.
By Roaring Dan