Scarper with current friend, OK (10)

I believe the answer is:

legitimate

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'ok' is the definition.
(I've seen this before)

'scarper with current friend' is the wordplay.
'scarper with' becomes 'legit' (I can't explain this - if you can you should give a lot more credence to this answer).
'current' becomes 'I' (symbol for electric current).
'friend' becomes 'mate' (mate is a kind of friend).
'legit'+'i'+'mate'='LEGITIMATE'

Can you help me to learn more?

(Other definitions for legitimate that I've seen before include "Kosher" , "authorised" , "Legal" , "Permitted" , "not breaking the law" .)

I've seen this clue in The Telegraph.

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