Sometimes I cavort around Penny in shameless displays (11)

I believe the answer is:

immodesties

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'shameless displays' is the definition.
The answer and definition can be both acts as well as being plural nouns.
Perhaps there's a link between them I don't understand?

'sometimes i cavort around penny' is the wordplay.
'cavort' indicates anagramming the letters.
'around' means one lot of letters goes inside another.
'penny' becomes 'd' (abbreviation e.g. Lsd - pounds, shillings, pence).
'sometimes'+'i'='sometimesi'
'sometimesi' with letters rearranged gives 'immoesties'.
'immoesties' placed around 'd' is 'IMMODESTIES'.

'in' acts as a link.

Can you help me to learn more?

I've seen this clue in The Everyman puzzle in The Observer.

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