Green’s Dictionary of Slang

Lee Marvin adj.

[rhy. sl.; US film star Lee Marvin (1924–87)]

starving.

[Scot]I. Welsh Trainspotting 270: Begbie indicates that he is in need of more solid nourishment: — Ah’m fuckin Lee Marvin.
[UK]N. Griffiths Stump 75: — You ate four of the fuckers. Four to my two. — Yeh cos I was Lee fuckin Marvin!