It's simple, don't look behind you.
You don't see that boy-scout looking executed-via-arrowhead man waving you down in your peripheral vision, right?!
Well, you don't acknowledge it.
Well, he doesn't know you know, just silently trying to ignore his quips and anecdotes that he spills, unaware of the living audience watching. Zombie- Hallucination- ghost-, You aren't entertaining it. It's gone on for months, and you find it second nature to ignore him- cute quirks and all.
As you sweep up the floors of your now dust-ridden manor of sorts, the dust attacks your senses and causes you to sneeze, wiping your nose with a sniffle.
"Oh Gesundheit , bud- and I forgot you can't hear me." he says chipper, chuckling as he skips along besides you.
"No no I appreciate it-" you say, wiping your nose. Immediately freezing as the words exit your mouth.
His eyes widen as you respond, in not only horror but intrigue. You can see hear him- see him? You're looking him in his eyes- maybe you should stop making eye contact-