Laminated

Flat Stanley became flat when a bulletin board fell on him.
You believe that he went on a series of wild adventures, right? Catching art thieves, sliding under doors, and mailing himself to far-off distant lands?
What really happened was a quiet, closed-coffin funeral.
His little brother Arthur was traumatized, shipped off to a mental hospital.
Every time his parents visited, he’d hand them another book he’d written about Stanley.
Alive. Adventuring.
Under his hospital bed, they found crushed and laminated mice.
“Experiments,” said Arthur, grinning
He escaped last night. Stole a steamroller.
Oh my God! The Mall!
Stop him!