mc5 - Cleri Who's Who

Four lines rhyming AABB - scansion, rhythm, metre and all that malarkey is as random as-u-like. Oh yes - the featured subject, usually a person, is mentioned in the first line.
Here's a full and frank(ly better) intro by Thos along with some that were made earlier.

And when shooting the movie musical about the Arthurian legend he was known to shout "Damn!" a lot

Barack Obama - careful now

According to certain rumour-mongerers is a radical Muslim just like Osama

The Democratic party is divided about his suitability as the Presidential candidate

But most of the rest of the country is piqued by the possibility of a leader who actually can orate

D'ye ken John Reid?

CdM

Aye, indeed!