I've been reading some six word short stories today, courtesy of this brilliant site, as well as one word poetry here. I like the idea of writing something really short, that definitely doesn't seem like a complete cop-out...
It's not quite a one word poem, but it's a damn sight shorter than a six word story. Hamartiology is the study of sin, which in itself is a fascinating word. This incredibly short poem will probably come to exist in a much longer capacity somewhere at some point.
But for now, enjoy!