Two men drive up to a restaurant with their dogs. there is a sign that says 'NO DOGS ALLOWED'. One of them says, "Too bad, I guess we can't go in."
But the other guy says, "Wait, I have a plan." He reaches into his pocket, and pulls out some shades. He walks up to the restaurant, and the manager says, "Sorry, no dogs allowed." The man says, "No, you don't understand, this is my seeing eye dog." The manager lets him go in. The second man follows his example, and walks up to the door. "Sorry, no dogs allowed." The man says, "No, you don't understand, this is my seeing eye dog." The manager looks at the dog and says: "It's a chihuahua."
"A chihuahua?!" The man says, "They gave me a CHIHUAHUA?!"