A guy
walks in a bar and is busy drinking when the bartender says, "You are drinking
more than usual. What's wrong?"

He
says, "I caught my wife in bed with my best friend."

The
bartender says, "What did you say to your wife?"

The guy
says, "I don't talk to the bitch anymore."

The
bartender says, "What did you say to your best friend?"

"I
said, 'BAD DOG! BAD DOG!'"