Laughter

I was wondering why I saw this silly little joke on another site yesterday but didn't have time to look into it. The joke goes.

So there are these two muffins baking in an oven. One of them yells, “Wow, it’s hot in here!”
And the other muffin replies: “Holy cow! A talking muffin!”

Not the sort of thing I expected to see on a political blog. but now it makes sense as it was a part of a science experiment to learn more about where laughter really comes from. To no surprise its a social thing, which is my most people don't laugh out loud when they are alone despite how often people behind a keyboard/cell phone use LOL.
Heres the New York Times article on the scientific findings.