How do you tell a joke without laughing before you reach the punch line?

Seriously! I keep thinking how funny a joke/story is and I am laughing so hard by the end that everyone is just laughing and has no idea what the story was supposed to be about.

Laughing at Really Funny Jokes Keeps Heart Attack Away

The adage, “laughter is the best medicine”, proves to be true when it comes to keeping heart attacks at bay. Recent studies conducted at a university in Baltimore show that people who always have a good laugh are less likely to have heart diseases. Further, people with heart diseases are found 40% less probable to [...]