Anyone got any good sleep weirdness stories?

I had my 7th reconstructive back surgery several years ago, and came home after 4 weeks in the hospital. I was on heavy doses of percocet when I came home. One night, after I had been home for a few days I dreamed I was driving around and was being chased by the cops. I outran them in my dream ! I woke up clothed in nothing but shorts and a shirt and dirty muddy shoes. I had the car keys in my pocket and the front door was open. (I was recouping on the couch). I dont know if I was really driving or not !But how do you explain the shoes?