Two guys in a warehouse

Two guys are working in a warehouse when suddenly one climbs up to the rafters, strips naked and swings from his knees. The boss comes out of his office and asks what the hell he's doing.
"I'm a lightbulb, I'm a lightbulb!" the man shouts down.
"Geez, you've been working too hard," the Boss replies, "Why don't you come down and go home for a rest?"
The guy comes down and heads for the door with his buddy right behind.
"Just where the hell do you think you're going?" the boss asks the second guy.
"Home, you don't expect me to work in the dark do you?"
"I'm a lightbulb, I'm a lightbulb!" the man shouts down.
"Geez, you've been working too hard," the Boss replies, "Why don't you come down and go home for a rest?"
The guy comes down and heads for the door with his buddy right behind.
"Just where the hell do you think you're going?" the boss asks the second guy.
"Home, you don't expect me to work in the dark do you?"
