Ok, ive got a story which when i was told made my hairs spike on my neck.
A good 5 years back this is. One of my close friends was asked to babysit a boy while the parents went around the corner for a drink as they never go out.
It was about 10pm, admittedly they asked her to put him to bed at 8, but she used it to get on the little ones good side. Anyway after about 10 minutes he came downstairs and said he cant sleep because a clowns making a funny noise. She thought he was trying to stay up abit longer. But she walked him back upstairs and left the landing light on.
5 minutes passed and apparently he came down again teary saying that its laughing at him and he cant sleep. So she goes up stairs and roots through his toybox asking him what toy made the noise, just incase another toy was pressing on it setting it off. By this time my friend was saying she was freaking out abit. Anyway she went downstairs again and actually rang the parents.. Which said hes making it up. Always said theres noises but nothing actually there.
While on the phone he screams she flies upstairs and the boy was saying; "the clown tried holding me, but i wasnt asleep i swear it". At this time, shes freaking out and telling them to come home. They are about 15 mins off, and because she sounded so upset they told her to go next door and see if they can sit with them, as their are close friends. (Bare in mind 5 years ago'ish my friend would have been 17).
Anyway long story short they get in the neighbours living room and the fella is looking at the house and notices something moving. Apparently there was a 40 year old man with a clowns mask and chef trousers scuttering down the drainpipe.
To this day thinking of this story freaks the hell out of me.