Old Ronnie Biggs helped rob a train;/
Imprisoned, he got out again./
He then did a bunk/
And sang as a punk/
While Slipper pursued him in vain.///
About twitmericks
There is an old fellow called Mick/Who's been penning the odd limerick/I admit he's no Keats/But he does them in tweets/So to follow, you just have to click. https://twitter.com/#!/twitmericks
"The limerick master of the twitterati" (The Guardian).