In 2006 , Christopher Noxon , in his book `` Rejuvenile , '' explored why adults fancy childhood pursuits like kickball , cartoons and cupcakes . WAKA , started more than a decade ago by a few friends is now in 33 countries . The 2009 World Yo - Yo Contest will attract more than 500 participants this year . Hundreds of adult soapbox ##ers will wear shorts to race in Portland , Oregon . ` ` Rejuvenile '' author Noxon believes childhood pastimes are becoming more acceptable .
WAKA , started more than a decade ago by a few friends is now in 33 countries . The 2009 World Yo - Yo Contest will attract more than 500 participants this year . Hundreds of adult soapbox ##ers will wear shorts to race in Portland , Oregon . ` ` Rejuvenile '' author Noxon believes childhood pastimes are becoming more acceptable .