On a steamy San Diego afternoon, baseball fans are headed toward the Padres' downtown stadium. As they approach the park, they pass a large steel stall on the sidewalk. Darlene Collins stops to look at it.
"I did not know that was a bathroom," Collins observes. "I thought it was some kind of electrical equipment or something."
Then the stall emits a familiar sound.
"Well, now that I hear it flush, ..." she says. "I did not know that was a bathroom."