Fear and dropping the keys

A man was walking down the street at night.  He came across a second man on his hands and knees under a streetlamp.

“What are you doing?” the first man asked.

“I’m looking for my keys” the second said.

Being a considerate soul, the first man got down on his hands and knees and searched with him. After ten minutes he couldn’t find a thing, and became irritated.

“Are you sure you dropped them here?” he asked.

“Oh, no,” the second man said. “I dropped them across the street in the vacant lot.”

“...