A man stumbles into his downtown office in the middle of the night, buck naked.  The security guard stops him in the lobby.  "Why are you here?  It's 2:00 AM.  And you're naked," the guard says.
"Well, you see," the man starts.  "I was in this dance club not too far from here.  I'm drinking, I'm dancing, I'm partying. It's all in good fun."
"And?", the guard interrupts him.
"Then the DJ comes onstage, and says: 'I will turn off the lights for 30 seconds.  By the time I turn them back on, men, take off all your clothes.  Then everything went dark.  30 second later, lights came back on, and all men were naked."
"Then what happened?"
"The DJ said: I will turn off the lights for 30 seconds again.  This time, women, take off all your clothes.  Again, everything went dark, and when lights came back on, and all women were naked.
"Then what?"
"So the DJ said: 'Now, men, get to work!'"
"But why are you *here*?!" the security guard raises his voice.
"I did what the DJ said," the man answers.

-- Modified on 6/30/2016 5:43:19 PM