I once rubbed the ol' eyeball after picking a hot pepper out of my Chinese food. Ow.
I had a bar of tea tree soap in the shower - they told me to get it to wash my tattoo the last time I went in for my abuse. ;) It's great soap so I was washing my face with it too. Well, once in awhile, I use Head & Shoulders when my head gets itchy. So one morning, I shampooed up with H&S, then washed my face with the tea tree soap.
Did anybody know that tea tree soap & Head & Shoulders make AMMONIA? Seriously. That's like the weirdest thing ever. I make sure now not to use those two products together. :)