A man walks into a bar with a dog. The bartender says, "Hey buddy, can't you read that sign? It says no dogs allowed! Get that mutt out of here!"

The man replies, "No, I can't read the sign - I'm blind, and this is my seeing eye dog."

The bartender is embarrassed and gives the man a beer on the house. Later that day, the guy is telling his friend about it: "I told him I was blind and I got a free beer!"

The friend then takes his dog into the bar and sits down, and the bartender says, "The sign says no dogs allowed! You'll have to leave!"

The friend says, "Sorry, I can't see the sign because I'm blind, and this is my seeing eye dog."

The bartender replies, "Nice try, mister. Since when do they give out Chihuahuas as seeing eye dogs?"

The man says, "They gave me a fucking Chihuahua?!?!"