I went to the LBS one day, and found a BMX bike laying derelict on the sidewalk, directly in front of the door. I picked it up, put it in the bike rack, and went into the store. A kid, maybe eight years old confronted me, angrily. "Why'd you move my bike?"

"Why'd you leave it on the sidewalk?" I asked without looking at him.

"Why'd you move my bike?" he repeated.

I turned, took a step toward him, looked directly down at him. "Why'd you leave your bike in the middle of the sidewalk in front of the door to this store where it was in my way and where anyone coming along could have tripped over it? Why didn't you put it in the bike rack where it belongs?"

He took a step back. "Oh," he said. "Sorry."

Sometimes it's fun to be an adult.