slender man

i layed in my bed, on the night of october 21, 2009. It was about midnight when i woke up, out of no where. i got up to turn of my t.v. considering, i dont like being in the dark. when i truned on the light i thought i saw a man in the corner of my room on the right hand side of my bed, just beside of my dresser. I was almost too scared to move. the fist initaial reaction was i thought there was someone in my room, but when i took another look, the man wasnt there anymore. Out of my terror i went downstarirs to sleep on the queen size bed in the basement. in the room in the back of the basement is where my brother sleeps so i figured i would be fine if i stayed down there.
An hour later, i still couldnt go to sleep, i was too scared. i know it sounds foolish to be scared but i had heard rumors of the slender man from my friend, who has also seen him, so of course i wanted to be causious. About two minutes later i was going to text my friend but right before i did, the porch light came on. then the motion sensor in from of the basement door went off. i knew it couldnt be and animal because no animal has ever set it off before, i know that because i have tried that wit my dog, Carly. As soon as i sat up in the bed, the light went off. i didnt get to sleep that night but nothing else strange happened that night.