What is the most unhygienic way you've used makeup?

When I was 14, I bought a liquid liner and had no idea that anyone put eyeliner on their eyelids so I tried to put it on my waterline while I had contacts in.

Clearly age doesn't change much because recently I put black eyeshadow on while tight lining bc I'd forgotten my kohl liner pencil at home. I've also used a brow pencil on my waterline as well. It's safe to say that this subreddit has taught me a LOT...