Daniel Bryan has one "yes chant" experience that truly stands out among all others.
He spoke to Masslive in an interview that you can see above. When it comes to some of the worst experiences he's encountered from fans that like to perform the chant in front of him, he recalls one that is, in all honesty, just pretty darn gross. When asked if people constantly come up to him to do the chant, he responded in the affirmative.
"It varies, some days none, some days [it happens] lots of times." Bryan replied. "The worst one I ever got was I was at the airport and I was using the urinal. A guy comes up to me in the bathroom and he was [chanting] 'Yes! Yes!' And then... [motioning at his crotch] I can't do anything."
Protip to those who want to meet their favorite stars: don't do it while they're doing their business.