To Haiku or not to Haiku?

In my Chasing Wattpad series I made fun of short poems and pissed a lot of people off. I hate short poems. They are a waste of time. But never let it be said I will not try something once. As penance for my sins against the Haiku poets I will leave my comfort zone for a while and try and write some. I am guessing it won't kill me, maybe. By the way, what is a Haiku anyway?