The bartender pours another. The man downs it and says "Another".
As the bartender pours the third glass he says, "Mister you drink like you have a problem. Want to talk about it?"
The man says, "Ten years, ten years I've been married to my wife, and today I go home a little early to surprise her, and I find my best friend, MY BEST FRIEND, in bed having sex with her."
The bartender says "Geez, what did you say."
The man says " I told him, BAD DOG! BAD DOG!"