The first time I saw the enormous tattooed biker sitting on the floor beside my four-year-old son's hospital bed, I thought he had walked into the wrong room. He was easily six feet two, with shoulders so broad they nearly filled the space between the bed and the wall, a thick gray beard, short graying hair, and arms covered in faded tattoos. He wore a black T-shirt beneath a worn leather vest, heavy black jeans, and boots that looked as though they had traveled a hundred thousand miles. Nothing about him seemed to belong in a children's hospital room decorated with cartoon animals, paper butterflies, and a small plastic television mounted above a white cabinet.
But he wasn't looking at the television or the medical equipment.

He was sitting cross-legged on the polished floor, carefully pushing a tiny blue toy car toward my son.
"Coming around the outside," he whispered in a deep, gravelly voice. "The blue lightning machine is gaining speed. Nobody can stop him now."
My son, Eli, lay against a mountain of white pillows, his little bald head tilted toward the edge of the bed. His pale cheeks were still marked by the exhaustion of another difficult week of treatment. One hand rested on his blanket, and a thin hospital bracelet circled his wrist.
For the first time in three days, he was smiling.
"You're cheating," Eli whispered.
The biker stopped the car.
"Cheating? Me?"
Eli nodded.
"You made it go faster."
The man gasped so dramatically that I almost laughed.
"Son, that's a serious accusation. I've been racing cars professionally for at least eight minutes."
Eli giggled.
It was a small sound, weak and breathless, but it stopped me in the doorway.
I hadn't heard him laugh like that in weeks.
The biker glanced up and noticed me standing there. His expression changed immediately, and he began gathering the little cars as though he expected to be told to leave. There were five of them scattered across the floor: a blue sports car, a green pickup truck, a yellow race car, a black convertible, and a tiny silver vehicle with a missing paint chip on its hood.
"Ma'am," he said, starting to rise. "Sorry. I didn't mean to get in the way."
Eli lifted his head.
"No, Wade! Don't go!"
The biker froze.
I looked at my son.
Then I looked at the enormous stranger who had somehow made him forget that he was sick.
"It's all right," I said. "You don't have to leave."
The man's shoulders relaxed.
He nodded once.
"Much appreciated."