Reminds me of another one:

So these three guys are walking their dogs. The first guy has a golden retriever, the second guy has a German shepherd, and the third guy has a chihuahua. They're taking and they decide they want to stop at the bar to grab a drink or two before they head home, but when they get to the bar they see a sign describing the bar's strict no-pet policy.

They think about it, and finally one guy says, "Hey, I've got it! Let's just pretend we're blind, they'll have to let our seeing-eye dogs in!"

So the first guy goes in with his golden retriever. The bartender says, "Hey, man, can't you read the sign? No pets!" But the man says, "I'm sorry, sir, but I actually can't read the sign -- you see, I'm blind, and this is my seeing-eye dog. Is that going to be a problem?" The bartender says, "Oh I'm sorry, I didn't know, of course that's fine!"

The second guy goes in with his German shepherd, and the same thing happens. The bartender apologizes, and tells him that of course he can keep his seeing-eye dog, although now he's a little suspicious since he usually doesn't get any blind customers and all of a sudden he's gotten two in a row.

Then the third guy walks in, and the bartender says, "Can't you read the sign? No pets allowed!" The man says, "Well actually I'm blind -- " The bartender cuts him off, saying, "Yeah right, and I guess your chihuahua is your seeing-eye dog? Come on, do you take me for a fool?"

The third man responds, "Wait, seriously? They gave me a fucking chihuahua?!"