Worlds Greatest COLL of Rib Ticklin Riddles - Value Books Author:Compiled What do you call a grizzly that has no teeth? A gummy bear! This silly riddle and hundreds more that will inspire groaning, laughing, and head-scratching can be found in The World's Greatest Collection of Rib-Ticklin' Riddles. This handy book is perfect for on-the-spot ice breakers, long car rides, or just a daily smile and pick-me-up. You w... more »on't be able to resist buying one for themselves and one for a friend!« less