Here's the scene from inside a stall:
-Two black marks on the back section of the toilet seat that look like the scuff marks that happen when black soled shoes meet polished floors.
-A diagonal scuff mark* on the left wall just under the t.p. dispenser, same sole-y origin in appearance. (*The low point of the scuff is towards the door, the high point towards the back wall.)
-A couple of other marks on the wall that look like large drops of a light brown liquid that hit, then slowly oozed toward the floor.
I can't seem to come up with a scenario that incorporates these three elements. I mean, why are the scuff marks on the back of the toilet? I would presume if one were standing on a toilet seat, the person would do so in the mid-section of the seat where the surface is the most level. Is the liquid from another, unrelated event? Either way, why would one take what looks to be tea into the stall and not leave it on the large and prominent counter just adjacent to the stall?