I saw a grown woman pull up her skirt and pee in the middle of the sidewalk on a busy street once, and she didn't look homeless or crazy.
Also when i used to work at Sears, an old lady (at least 80 yrs old) took off all her clothes in the middle of the clothing aisle to try on a top she liked. She told me to "keep an eye out to make sure no men saw her"
It took years of counseling to recover from that.