Yes, I roll up pants in a risky way (10)

I believe the answer is:

perilously

'in a risky way' is the definition.
(I know this)

'yes i roll up pants' is the wordplay.
'pants' is an anagram indicator (UK informal term for 'nonsense' or 'rubbish').
'yes'+'i'+'roll'+'up'='yesirollup'
'yesirollup' with letters rearranged gives 'PERILOUSLY'.

I've seen this clue in The Independent.

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