"Last week, a guy came back with a plastic zipper bag from a pillow and said that he bought it but that no pillow came inside it. How do you not notice that the pillow is missing from a see through bag? And more importantly, what kind of idiot thinks we are dumb enough to believe him when he tries to scam us?"
Maybe he thought it was some kind of magic bag that rendered its contents completely invisible.
Thanks to iloveduckies!