I love Yo Yo's,though I am not brilliant with them! They seem to come and go in almost every generation,and have b een around for literally thousands of years,dating further back iin time than the Ancient Greek period!! Yo-Yo is apparently a relatively modern name! It had many names in French,including Bandalore and Jou Jou.I would think the common name Yo Yo ,coined in the 20'S in America,comes from Jou Jou which means Little Toy!!