I heard one that went..
Maisie often wondered why
Acids trouble alkali
So Maisie in a manner placid
Fed the cat sulphuric acid
Pussy whereupon grew frantic
Executing many an antic
'Ah ha', cried Maisie, overjoyed
Pussy is an Alkoloid.
(
Occulus Swallowed, instead of spat, on,
Wed 1 Aug 2007, 19:02,
archived)