A poem is not...

 A poem is not an ant
but it can be quite short.
A poem is not a banana
but there may be something under its skin.
A poem is not a coat
but it may have some warmth in it.
A poem is not a dog
but it might be quite a friend.
A poem is not an endless pair of trousers
but it can be quite long.
A poem is not a footballl shaped like a cucumber.
A poem is not a great number of things.
A poem is not a hedhehog
but it might be hard to get hold of.
A poem is not an igloo
but it can feel like home.
A poem is not a jumble sale,
but it might contain some rubbish.
A poem is not a kite
but it might enjoy the wind.
A poem is not a lightbulb
but you can change it if you want to.
A poem is not a monkey
but can be quite human.