Have you ever felt like you were being watched? Isn't it a spooky feeling?
It must be some kind of supernatural thing. Like our souls are all linked, and when someone tries to covertly observe us, we feel the cosmic vibes emanating from their place of cover.
At least that's my theory. There are skeptics, but none of them can explain the simple, observed fact that a person sometimes can inexplicably feel another's presence. They're just stubborn unbelievers.
Timby had the feeling he was being watched.