I have a fake ghost story to share. When we moved into this house, on one of the first nights there was a rat in the roof. It ran up and down like crazy for hours. Me, being an avid horror movie watcher, was trying to get my boyfriend to not go into the roof, rambling about The Grudge and whatnot. He went up, couldn't find anything, closed the manhole and the noise stopped.
Next morning the manhole was open again. I freaked out, he was like "woah we both know I closed that". Over the next few weeks, we'd come home and it was open or had moved so the gap was bigger/smaller/etc. I was getting more and more freaked. My mum was like "are you sure there isn't a squatter living up there?" Eventually it stopped and I forgot all about it til mum brought it up at a dinner party. My boyfriend confessed to being the one who kept moving the manhole to scare me. Bastard!