Man covered in black oil

I have told this before on here but this will be longer and more detailed because it's not in a comment. 

When I was really little (I'm guessing about 5-6) my uncle lived out in Chickasaw Oklahoma, wayyyyy out in the country. Just one little White House off of an old dirt road, there was an old barn behind it. It was so old it was falling apart but my uncle still kept cars and such in it. We visited, I was bored so I go outside and explore, I'm so bored I'm out throwing rocks and I go into the barn and just start throwing rocks and then picking them up and throwing them again, I threw one, bent down and when I came back up I saw a very tall old man, completely covered head to toe in black oil and I very vividly remember him looking stiff, he made a sound like he couldn't breathe and he just had this look like "pitty me" on his face. Okay so picture me, I'm little bitty.. Hair in pig tails I'm in a white dress and those stupid frilly socks my mom forced me to wear. I stood there like a deer in headlights for like 30 seconds and then I ran so fast screaming on the top of my lungs crying for my mom and the family dog thought I wanted to play, the dog was much bigger than me and took me out... My mom runs out, sees me screaming bloody murder just completely covered in dirt with a dog on top of me and she thinks the dog is attacking me. She pulls the dog off and screams at my uncle and picks me up takes me inside and asks me if I got bit. It took a good 10 minutes of dramatic sobbing to tell her what I saw in the barn. Of course they assume there's a trespasser and go out looking for him and they come back in and tell me "there's nobody out here, we are the only people out here we are in the middle of nowhere I promise you there's nobody there" 

This is something I will remember for the rest of my life, I will never forget the feeling he gave me or the way he looked. I never went back to that barn.