Go into the saloon

After only a short debate, your thirst gets the best of you. You walk quickly up to the saloon and push the doors open, wandering inside. The place is empty, dust has gathered on the tables and chairs around you. It appears as though no one has been here for a long time, possibly since the early nineteen hundreds in fact. Sand has blown in on the floor and the wood of the bar and tables has grown dry and warped. You wander over to the old pool table, which aged equally poorly, the felt rotting off of the surface, and pick up the eight ball. It's in near perfect shape.
You smile at that, then, still holding the eight ball, turn to leave. You see it then...a single shot glass sitting on the bar. you think back to your first viewing of the room and wonder if it had been there.
After a moment's thought, you figure it must have been. There was no one around to move things, after all.
You walk up to the bar, look around, then look at the shot, thinking, liquid is liquid, right?