Do Aliens Laugh?

The more you think about laughter, the less sense it makes. I tell you a story with an inherent contradiction or impossibility and you have an emotional reaction which releases certain pleasant chemicals in your brain and usually inspires you to create one of a general set of particular rhythmic sounds. So great is our love of these improbable stories and observations and the reactions they elicit in us that we create designated places where we go to be reasonably well assured that such stories will be told and such reactions will be had.

How odd.

I sometimes wonder if we were visited by aliens what they would think of humor in general and the strange phenomenon of comedy clubs in particular.