It was just a head.
It sat there, leaning against the curb, the bloody jaw moving, tongue writing, eyes, darting back and forth. The body was still under the truck.
“Whadda you reckon it’s thinking?”
“I doubt it’s thinking anything at all. They appear to act on instinct. It might not even be aware that it’s been decapitated.”
“Betcha it does. I bet that head flew off that body right when the truck hit it. I bet that zombie’s eyes was wide open as the head rolled on the ground. I’d betcha anything. That sucker knows it’s just a head.”