You're thin and Mark looks like someone else?
Not just thin, but I don't have nearly as much gray hair. However, that would be what's right about this photo.
It is a sliced photo...A combination of two photos sliced together to make it look like you are both in the photo at the same time. Actually, each of you took a picture of the other with the camera on a tripod maybe then the two photos were combined either physically or digitally into one photo. But considering the year I would guess it was the latter. The clue is that there seems to be a missing hand. That is the givaway.
Mark's left hand is missing, my right hand is actually part of my left hand, and Mark's left foot is my left foot. I stitched together the two photos I scanned (taken as you said.) and used a photo program to make them appear kind of as one. It's not perfect, but that day we couldn't find somebody to take our photo.
Could you stitch me into a pic with Brad Pitt?
Just take along a small tripod next time and use the auto timer on your camera.
Thelma and Louise Brad Pitt, or mature Brad Pitt?