Mom playing around with hooter in this? (9)

I believe the answer is:

motorhome

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'this?' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.

'mom playing around with hooter' is the wordplay.
'playing around with' is an anagram indicator (I've seen this in other clues).
'mom' mixed up with 'hooter' makes 'MOTORHOME'.

'in' is the link.

Can you help me to learn more?

I've seen this clue in The Independent.

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