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I guess funnyman Seth Rogan is either super clean or really dirty ...

The bachelor stocked up on toilet paper and papers towels yesterday -- saving a few bucks by buying in bulk. And can you blame him? I mean just because he's a big movie star doesn't mean he can't stand to pinch pennies every once in a while.

We just can't help but wonder what kind of messes he's cleaning with all those paper products? ...