Listen up...

A businessman enters a tavern, sits down at the bar, and orders a double martini on the rocks. After he finishes his drink, he peeks inside his shirt pocket, then orders the bartender to prepare another double martini.

After he finishes that, he again peeks inside his shirt pocket and orders the bartender to bring him yet another drink. "Look, buddy," the bartender says, "I'll bring you martinis all night long, but, you gotta tell me why you keep looking inside your shirt pocket right before you order a refill."

The customer says, "I'm peeking at a photo of my wife. When she starts to look good, I know it's time to go home!"