Mike leads playful disruption (8)

I believe the answer is:

mischief

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'disruption' is the definition.
(thesaurus)

I can't explain the rest of the clue.

(Other definitions for mischief that I've seen before include "Hanky-panky" , "Reckless behaviour" , "Devilment, impishness" , "Playful troublemaking" , "Shenanigans" .)

I've seen this clue in The Times.

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