It was probably the Ladies Room...just sayin'!
A decade or two ago, I went to the 4th of July celebration at the Hatch Shell in Boston, and as usual, it was jammed with hordes of people. They had set up a long row of port-o-potties, but only the women were going inside to use them.
On the back sides of them (which faced the river) there were rows of men peeing on the back of the port-o-potties. The State Police, in a parked car driven along the pedestrian pathway, turned on their spotlight and trained it on the urinating men highlighting them starkly in a large, bright circle of light...
The urinators continued unperturbed...:)
The use of urine by ancient wool fullers made it economical to give everyone a proper spot to “go”. :^)
Men’s rooms at concerts are defacto pee parties, because if the line is bad, we men just start lining up to use each of the sinks. Pllllt! Problem solved.
It was probably the Ladies Room...just sayin’!
The way those seats are cut out on the front
it’s obviously a men’s room...