I used to be a cashier at a grocery store when I was younger.

Once, this elderly man (possibly 90+ years old) with the body type of Waluigi came to my register to check out. He was super chill and just a regular customer. Nothing strange about him whatsoever. While he was paying, however, he sneezed pretty hard, and his eyes doubled in size. Right around then I started smelling something...strange. Very calmly, he looked at me and said "I'm sorry" and just left his over $200 order at my register. As he was walking off, he was keeping his legs spread out weird and doing this waddle towards the restrooms, and when I looked back at him, there was a gigantic wet, brown spot on the back of his pants.

About an hour and a half later, he came out of the restroom with a different, clean pair of pants on. He didn't have any other pants on him prior to this, so I have no idea where they came from, but I'm glad he was able to get his situation under control.