Without naming names, what is the grossest thing you've dealt with during a poker game. A guy who hadn't showered for eight days? A player licking Buffalo sauce off his fingers?
For, me it wasn't olfactory or directly insanitary...it was this guy getting a massage during a cash game during a mid-2000s WSOP. He was enjoying it a little too much, and after about 20 minutes, he whispered something in the therapist's ear. She listened carefully, nodded to confirm she'd heard what he said, and then announced in full voice for everyone to hear, "I'm sorry, sir, we don't do those kinds of massages."