What's the silliest think that has given you the ick?

Obviously BIG ICK from people that don't treat staff properly and politely at restaurants. But that's just being a good human. I wanna know what the most innocuous thing is that has given you the ick. From my personal life:

- A guy once wore gloves out when it was cold

- Another guy once dropped his lip balm when he reached into his pocket and struggled to pick it up bc it was rolling away and that also gave me the ick.

- "Hehe"

Let's be Petty White (may she rest) and talk TRASH!