Is it disturbed inside the tupperware? (3,2)

I believe the answer is:

het up

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

'is it disturbed' is the definition.
I can't tell whether this defines the answer.

'inside the tupperware?' is the wordplay.
'inside' indicates the answer is hidden within the clue.
'HET UP' is hidden in the letters of 'the tupperware'.

Can you help me to learn more?

(Other definitions for het up that I've seen before include "On edge - agitated" , "Irate" , "Upset, agitated" , "Overwrought" , "Angry - excited" .)

I've seen this clue in The Sun.

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