Pure nuttiness: the Twimerick , a fiendish confection of limerick plus tongue-twister, topped off by the deliciously whacky illustrations of its inventor, Lou Brooks. To wit (and to be read out loud quickly): A petulant flatulent platypus starts, To tooting and flouting his flute to his farts, But at platypus outings, His flatulent floutings, Flout his flute flat at the tootiest parts. Nonsensical whimsy--or whimsical nonsense--Twimericks are a form...