Anyone believe in ghosts?

I have seen a few. bunch of us partying on a deserted road- middle of winter- bonfire burning. one of our friends had driven off earlier to go get more beer, he was long overdue. so me and my friend decided to make sure he wasn’t stuck in the ditch somewhere- with the beer. so we got off the party road, driving down the next, and we both saw someone waving at us crossing their arms over their head- out in the corner of this large snow covered field. we thought it was rob- somehow stuck way off the road- which really wasn’t out of the ordinary. well we got turned around to where we could shine the headlights into that corner of the field. we couldn’t see rob, or even his car. then it occured to us- there were no car tracks leading to that spot- and definately no foot prints visible in the snow. now we both responded at the same time to the person waving their arms over their head at that spot. we both thought it was rob. we were wrong. that old deserted road we were partying on- at one time, had old farmsteads from the 1800’s (obviously all decayed, with only foundations left) along it. we even went so far as to verify that there were no footprints near where we saw ‘the ghost’- the snow was devoid of any kind of footprints- there was nothing that would catch a piece of plastic and wave that in the wind- nothing. when we finally got back to the party- there was rob, his girlfriend had been kind of amorous- and he had parked about 5 miles away in the other direction from the road we had taken.