Y'know that thing - if you see this, post a poem in your journal?
Well, here y'go.
I'm not sure, but I think I first heard this on an old Goon Show. It certainly has the feel of something by the late, great Spike.
The boy stood on the burning deck
And he was all a-quiver.
He gave a cough, his leg fell off
And floated down the river.