Come to bed and behave inappropriately? (5,6)

I believe the answer is:

touch bottom

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'behave inappropriately?' is the definition.
I know nothing about this answer so I cannot tell whether it can be defined by this definition.

'come to bed' is the wordplay.
'come to' becomes 'touch' (synonyms).
'bed' becomes 'bottom' (synonyms).
'touch'+'bottom'='TOUCH BOTTOM'

'and' acts as a link.

Can you help me to learn more?

I've seen this clue in The Guardian.

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