What's the most disgusting thing you've encountered in your travels?

I've been on a huge travel kick the last few months, and while I love it, I've been having some pretty disgusting experiences. Got food poisoning in France, found a cockroach in my shower in London, and developed a fungal rash in Iceland from a dirty hot spring. While these things are pretty gross, I've learned to laugh at myself and the absurdity of it all. <br><br>So, what's the most disgusting thing you've experienced in your travels?