Nope, you're not paranoid about delivery drivers and this kind of stuff does happen. Cameras outside this customer's home captured a horrifying moment and unfortunately he did know until AFTER he had his milkshake.
Guarantee this guy takes a little bit of every customer's order. I can't believe he did it right at the door....so savage! Guess the driver just couldn't resist a sweet treat from Cold Stones Creamery. The family reached out multiple times to DoorDash but haven't heard back.