When your near Slenderman sometimes static can be heard and you also cough lots

^i heard static at the weekend and I was no where near a tv, I was also by lots of trees and fields. And on the way back home I think I might have seen him in not sure a caught a glimpse of a tall greyish black thing with white on top (his body and head). I also cough lots.

But static is people talking, if you listen you can hear what they're saying (if you practise) but if you try to listen be careful because that voice might have a body, and when you start noticing them they'll start noticing you