A man came into a bar, ordered a shot and a beer, chugged the shot, chased it with the beer and then looked in his shirt pocket. Then he ordered another beer and repeated the exercise all over again. This continued several times. Finally curiosity got the better of the bartender. “Excuse me, buddy; I couldn’t help but notice. Why do you look in your shirt pocket after every round?” The man replied, “That’s how I tell if I’m drunk or not.” “What? How’s that?” “Oh, see: I keep a photo of my wife in there. When she starts looking good, I know it’s time to head home!”