whats the creepiest thing someone ever said or messaged you about.

I worked at a gas station for about a month and a half doing night shift. At around 2:30AM this guy with a trench coat, gloves, and sunglasses walks in and asks if we sold bleach. I told him no, and that there was a walmart down the road that did. He said nothing and left. The way he asked combined with how he was dressed was just a bit unnerving. Seemed like the guy wanted to wash a dead hooker down the drain or something.