Joker Ashton Kutcher turned the tables on our photographer today when we caught up with him in downtown LA.

Ashton loves all paps and that's why he likes to think he'd make a good one.

As soon as he saw our guy he whipped out his cell phone and started taking pics.

We know when we've been stung...but it was all in good fun.

See more pictures of Ashton in the gallery below...

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