Maybe not dumb just dark and absurd, but called the cops.

Worked at a retail computer store with repair shop. Extremely assholish customer drops off his machine for an install of a "defective" piece of hardware he couldn't manage to install on his own, arguing that install should be free because it's our fault, somehow. Service manager cuts him a deal anyway just to make him happy.

He drops off his PC. Tech takes the machine, boots it up, bam... CSAM on his desktop. Cops came and got the PC, never saw the piece of shit again.

Actually this happened a few times but only once was the customer rude at first.

Retail is depressing.