Pfft, you feel unsafe? Try already being scared of slenderman, and then watch EVERY SINGLE ONE in one night, right before bed.
lolslenderman
My brother managed to convince his naive friend of Slenderman's existence. It says "SL" on the floor all over the main road for "Sewerline" which he again managed to convince her that it stood for "Slenderman's Lane" and she freaks out every time she goes down the road.