My classmate, niece of a famous Canadian rocker, was in the front row and had her mouth and eyes pissed in by Shannon Hoon in Vancouver at the concert in 1993:
https://www.straight.com/music/that-...naked-and-peed
She said he whipped around so fast while peeing that she didn't get a chance to react and was hosed directly in the face. I remember it so well because she was so weird after that, and took time off school because she later told everyone she got an eye infection from it.