Once, when I worked for McDonald's, there were reports of screaming coming from the third stall in the unisex bathroom. People were scared so much by the screaming, we even found an uneaten Big Mac! I was told by the manager, Mr. I. P. Seaman, to investigate in the middle of the night. I brought with me a flashlight, an assault rifle, and some snacks in case I got hungry. Anyway, I walked into the unisex bathroom and standing in front of me, was the Ghost of The Third Stall. He was floating about half a metre off the ground, and wore rags. He started screaming like a banshee. So I said to him, "Were you a drill sergeant when you were alive, because you have my privates standing at attention."
The ghost never bothered us again.