Improvisational poetry (I think that's what I call it)

Today while I was posting on my other blog, Audrey's Opinion, I got an idea. Why is there improv acting, but not improv writing?
Improv poetry is writing without planning it out.  Like improv acting, but poetic.

So, now I present the poem, Some Things.

                                   Some Things

I am a person, a person I say

I like to sing, I like to play

I like things, things that are big

I like giraffes, buses, airplanes and Pigs

I also like things, things that are small

Things like ice cream, donuts and balls

Yes I like things, I do I do

But I like nothing more than you.

Comment please!