Crossword Genius

Who's got the hot milk? (3,7)

Ross

I believe the answer is:

cat burglar

I'm a little stuck... Click here to teach me more about this clue!

This clue might be a double definition.

'who's' is the first definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.

'the hot milk?' is the second definition.
Although both the answer and definition are singular nouns, I can't understand how one could define the other.

'got' is the link.

Can you help me to learn more?

(Other definitions for cat burglar that I've seen before include "Criminal who can climb" , "having taking ways?" , "Limber law-breaker" , "What Macavity could be" , "out to steal the kitty?" .)

I've seen this clue in the Evening Standard.
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