How to pronounce “shorn”(noun) in English

surfaces on the car doors, they made a sound like a box of toothpicks falling to the floor: click-click, clickclickclick, click. She turned the crank until twelve more brown M&Ms fellout. “Who’s the Van Halen fan?” Lester beamed. “Might as well jump, JUMP!” He mimed heavy metal air guitar and thrashed his shorn head up and down as though he werehead banging with a mighty mane of hair band locks. “You’re the first one to get the joke!” he said. “Even Perry didn’t get it!” “Get what?” Perry said, also grinning.