Writing 270, via Mac

The Cave, a bar
Chapel Hill, North Carolina 27516
Men's restroom, basement

If it's yellow, let it mellow. If it's brown, flush it down.

Beneath that:

Flush it anyway hippie!

The Cave is a dingy, old, but well-loved bar in Chapel Hill. It is frequented by hippies and hippy-haters alike, hence the above exchange. Though not a hippy, I also let the yellow mellow.