The Crossword Centre Clue-Writing Competition

CCCWC May competition voters’ comments
 
Clue no. 37: Might this be taken as the source of mirth, not very pleasant, involving butt of joke?

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A clue to MICKEY.
1 comment refers to this clue (from 1 competitor, 0 others)

Here is the text

Comments on the clue
1.Pretty decent construction