A man walks into a bar with his dog and orders two glasses of whiskey. He proposes a toast and both he and his dog empty their glasses.
The girl behind the bar is surprised and asks; `Can your dog perform other tricks?`.
`But of course`, the man answers, `he can even gratify a woman`.
Anxious to know more the girl leads the man and the dog into a little room above the bar. She undresses and full of expectation she lies down on the bed.
The dogs looks at her and does nothing.
`It`s always the same thing with you!`, the man then shouts to the dog, `I`ll show you how to do it one last time`