They claim to be the largest adult bookstore in the entire U.S. of A. True? Who knows? Who cares? Size doesn't matter, right? This clean, well-lighted place for porn and sex toys, conveniently located near State Road 112 and busy 27th Avenue, has everything a sexy beast might need, from Astroglide to poppers to lingerie to dildos to anatomically correct lollipops. The store's array of new and well-kept video booths affords privacy to those customers who lack VHS equipment or who simply may not wish to bring home X-rated material. An added plus: The Playground shares parking lots with a Burger King and a check-cashing store, which provides discreet cover for those who are still shy about patronizing such places, even though it's perfectly legal.