A major form of Japanese verse, written in 17 syllables divided into 3 lines of 5, 7, and 5 syllables, and employing highly evocative allusions and comparisons, often on the subject of nature or one of the seasons.
I want to play!
You can. Just post your own 5-7-5 in the comments sections. If you really want to keep it interesting, reply, discuss and argue in haiku as well.