Blonde/Sick Leave Joke

I urgently needed a few days off work, but, I knew the Boss would not allow me to take leave.
I thought that maybe if I acted "Crazy" then he would tell me to take a few days off.So, I hung upside-down on the ceiling and made funny noises.
My co-worker (who's blonde) asked me what I was doing.
I told her that I was pretending to be a light bulb,
So, that the Boss might think I was "Crazy" and give me a few days off.
A few minutes later the Boss came into the office and asked,
"What in the name of good GOD are you doing?"
I told him I was a light bulb.
He said, "You are clearly stressed out.
Go home and recuperate for a couple of days."
I jumped down and walked out of the office...
When my co-worker (the blonde) followed me, the Boss asked her,
"... And where do you think you're going?!"

She said, "I'm going home too. I can't work in the dark”!