In college, a couple of friends and I saw a girl from our department cutting her toenails at the bar during happy hour. In my top five grossest things seen at a bar. 
complete list please.....
5. Used condom on the floor
4. Toenail cutting incident
3. Overflowing toilet with identifiable...stuff...all over
2. Used tampon on the floor, no toilet paper or anything
1. Explosive diarrhea on floor, toilet, and wall
You've seen it, you can't un-see it.