Comedian's repertoire is one that's absurd (8,5)

I believe the answer is:

laughing stock

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'comedian's' is the definition.
Both the answer and definition are singular nouns.
Perhaps they are linked in a way I don't understand?

I don't understand the remainder of the clue.

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(Other definitions for laughing stock that I've seen before include "Object of ridicule" , "inhabitants of funny farm?" , "Target of ridicule" , "Butt of ridicule" , "Object to joke" .)

I've seen this clue in The Globe and Mail.

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