A guy walking his Doberman Pinscher says to a guy walking his Chihuahua, "Let's go over to that restaurant and get something to eat."
The guy with the Chihuahua says, "We can't go in there. We've got dogs with us."

The guy with the Doberman Pinscher says, "Just follow my lead." They walk over to the restaurant, and the guy with the Doberman Pinscher puts on a pair of dark glasses, and starts to walk in.

A guy at the door says, "Sorry, sir, no pets allowed."

The guy with the Doberman Pinscher says, "You don't understand. This is my seeing-eye dog."

The host says, "In that case, come on in."

The other guy says to himself, "What the heck," puts on a pair of dark glasses, and starts to walk in.

The host says, "Sorry, pal, no pets allowed."

"You don't understand. This is my seeing-eye dog."

The host says, "A Chihuahua?"

Thinking quickly, the guy responds, "You mean they gave me a Chihuahua?!"