A question both deep and profound
Is whether a circle is round
In a paper by Erdös
Written in Kurdish
A counterexample is found
 Not mine, this one, of course

Which reminds me of this mnemonic one I wrote more than a decade ago:

How I wish I could calculate pi!
Assess twice the ambit. Simplify:
Bisecting through
Canceling two
As the diameter thou divide by.

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[CdM] Tremendous!

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Möbius bands
A mathematician confided
That a Möbius band is one-sided
And you get quite a laugh
If you cut one in half
For it stays in one piece when divided.
(Anon)

A mathematician named Klein
Thought the Möbius band was divine
He said "If you glue
The edges of two
You get a weird bottle like mine."
(Leo Moser)

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I do hope Attila the Stockbroker doesn't mind me posting one that he's just put on Facebook:

A smelly, stub filled old ashtray.
Badly kept Greene King IPA.
Grim, pinched-face psychosis.
Severe halitosis.
That's Faragery in the UK.

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A bunch of editor-types with what I correspond came up with a deadly set of alternative lyrics for 'God Save The Queen' but about Oscar Pistorius. It started...
Oscar Pistorius
Short through a door for us
Girlfriend injurious...
I don't think it got an ending because we all decided we would all go straight to hell if we finished it.

Keep up the good work, chaps.
oh, and

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