How you might look silly after a messy breakfast? (3,2,4,4)

I believe the answer is:

egg on your face

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'silly after a messy breakfast?' is the definition.
I don't know anything about this answer so I can't tell whether this works.

'how you might look' is the wordplay.
I cannot really see how this works, but
'you' could be 'u' (commonly used in online communication) and 'u' is located in the answer.
'look' could be 'face' (synonyms) and 'face' is present in the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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