I was marshaling the Utah Ironman two years ago. One of the girls I was giving a penalty asked me to hold her bike. I was checking my stop watch when I noticed some splashing on my shoes. Yes, she just squatted right there, in the road, and went...

Afteral, the penalty was only for 30 seconds, she didn't have much time

I replaced my shoes later that day. Luckly I got a few years of use out of them!