Got beaten by mug -- was humiliated (4,4)

I believe the answer is:

lost face

'was humiliated' is the definition.
(I've seen this in another clue)

'got beaten by mug' is the wordplay.
'got beaten' becomes 'lost' (I've seen this in another clue).
'by' means one lot of letters go next to another.
'mug' becomes 'face' (I've seen this before).
'lost'+'face'='LOST FACE'

(Another definition for lost face that I've seen is " humiliated".)

I've seen this clue in The Telegraph.

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