Man with a German Shepherd dog goes into a bar and sits down at the counter. Bartender says, "You can't bring that dog in here!"
Man says, "But this is a Seeing Eye dog!"
Bartender says "Well, OK, then I guess it can stay."
After a while, the man and the German Shepherd get up to leave. As they're going out the door, another man with a Chihuahua is coming in.
First man says, "The bartender won't like you bringing that dog in here, but just tell him it's a Seeing Eye dog and then it'll be OK."
Second man looks dubiously at his tiny Chihuahua, thinks a fews seconds, then thanks the first man and goes on in.
Bartender says, "Hey! You can't bring that Chihuahua in here!"
Man stares straight ahead and exclaims "They gave me a Chihuahua?!"