Can You Laugh Without Smiling?

My son Gregory shared this with me. People that can do it don't look like they're genuinely laughing... You be the judge.



After watching this video clip, it's probably better that we smile when we laugh, else we look like laughing zombies that need to be institutionalized. Most people on youtube couldn't even fake it.



So,what do you think, is it possible to have a genuine laugh without smiling? Me thinks no! And thank goodness for that!