What moves the star of Jackass to risk his life for our entertainment? This “very serious investigation” involves interviews with friends and family, a surf trip to Malibu, a gag with a fake raccoon, and a stop at In-N-Out:

He nosed the car into the drive-through line, drawing stares as he nosed—some for the vehicle, some for the driver. Mostly male stares. A teen-age boy stepped up to the passenger window and leaned in to take his order.

“One hamburger with tomato, lettuce, and mustard,” Knoxville said. “Fries, please. And a cup of water.”

“Onion?”

“No, sir.”

The teen-ager squinted. “You look familiar. Are you famous, by any chance?”

“Actually, completely by chance!” Knoxville improvised.