Finding a bathroom thread

I was thinking of doing a thread in IMHO, to be titled something like “5 best poo threads”

Four immediately leapt to mind but I can’t find one I remember and I was hoping other Dopers could help.

It was about being desperate to find a bathroom. Not the “dead junkie” thread, although that is on the list. One poster talked about running to a filthy gas station restroom, finding no paper, tottering carefully back to her car and grabbing a paperback book she had already read. Of course there were stories about bushes and jonnies on the job.

I’ve tried a number of words and combos but have not found the thread so far. Any Dopers remember a thread like this?