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.

Raak

Got into a mess

Botherer

When he heard Spandau Ballet's famous hit record, "Gold",

Software

He then knew why to stay in prison he was told.

CdM

Rudolf Hess, Commandant of Auschwitz

Tuj

Was known to have a soft spot for us Brits

Darren

And eventually, when he was found by the Scots

Rosie

who, despite his good intentions, concluded that the leopard cannot change its spots.

CdM

[Darren] No, no, no. You are confusing Rudolf Hess, the subject of the prior clerihew, with Rudolf Hess.

Darren

[CdM] I wondered if there were two Rudolf Hesses, and indeed asked at the pilg at the weekend about this, but the consensus was that there was only one. Now, assuming you're right and there were two, it's still the case that most people in my survey weren't aware of that fact and really you have to expect this kind of confusion.