N.E.S.O.
A N. E. S. O. is a creepy guy who moves like a gypsy, always on the run. He'll follow you to school, to the store, anywhere, just to make you feel icky.
"He followed me from the bus stop to my house."
"He was at the grocery store, staring at my mom like she was his next victim."
"He wore a hat and a fake mustache. Still didn't hide his grossness."