Okay kiddo, so Hokku is a type of poetry that comes from Japan. It's sort of like a tiny story that is told using just a few lines of words.
Hokkus have three lines, and the first and last lines have five syllables and the second line has seven. Syllables are like little beats in a word, and you usually clap your hands once for each syllable when you say it out loud.
Hokkus often talk about things in nature, like the seasons or different animals. They try to capture the feeling of what it's like to see or hear or smell those things.
So, in a way, Hokkus are like little windows into the natural world that can help us appreciate all the cool stuff around us. Pretty neat, huh?