Hiccup

This is a riddle. It works well if you let the students ask yes and no questions about the situation, before revealing the answer.
Q: A man goes into a bar and asks for a glass of water. The barman pulls out a gun, and points it at the customer. "Thank you" replies the customer and walks out. What happened?
A: The customer had hiccups.
  (It always works - a shock as a hiccup cure appears to be an international thing.)

True Music Lover

How Do you Identify a True Music lover:

A man when hears a women is singing in the bath room , 
He puts his ear on the keyhole rather than eyes.

Longest Word

What is the longest word in the English language?
SMILES: there is a mile between the first and last letters!"

Dogs Leg

Some scientists decided to do the following experiments on a dog.

For the first experiment, they cut one of the dog's legs off, then they told the dog to walk. The dog got up and walked, so they they learned that a dog could walk with just three legs.

For the second experiment, they cut off a second leg from the dog, then they told the dog once more to walk. The dog was still able to walk with only two legs.

For the third experiment, they cut off yet another leg from the dog and once more they told the dog to walk. However, the dog wasn't able to walk with only one leg.

As a result of these three experiments, the scientists wrote in their final report that the dog had lost it's hearing after having three legs cut off.