Crossword Genius

Fed up? I’m smiling on camera to get lift (7,3)

Ross

I believe the answer is:

cheesed off

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

'fed up?' is the definition.
(I've seen this before)

'i'm smiling on camera to get lift' is the wordplay.
I cannot really see how this works, but
'lift' could be 'doff' (as in doffing your hat) and 'doff' is present in the answer.
The remaining letters 'cheese' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for cheesed off that I've seen before include "Cross" , "Not at all happy" , "Bored" , "frustrated" , "Unhappy" .)

I've seen this clue in The Guardian.
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