Is

Is manslaughter man's laughter?
It depends on what your definition of is is.
If the love fits you mustn't quit.

Is
It
If

I see
I touch
I feel

Is ee
It ouch
If eel

Is the above a poem, why or why not?

Fundamentally, what does poetry do? Not, by the way, what do we want poetry to do. But what does poetry do?