A man goes into a pub and ordered a large whisky, which he downed in one. He immediately ordered a second one and drank it just as quick.

"Steady on", said the barman, ".. is everything all right?".

"No", said the man, "I just got home and caught my wife in bed with my best friend and they were having it away".

"What did you do?"

"Well I told my wife we're finished and to pack her bags and get out".

"I don't blame you, but what did you say to your best friend?"

"I looked him squarely, eye to eye, and said bad dog, bad dog!".