Adults only at these birthday bashes! The editors of Penthouse invite you to the biggest. steamiest party of the year celebrating that most special day for the sexiest. most adventurous readers. Whether it's a wild stripper or a lover's seduction. a well-planned orgy or a spontaneous spanking. a thrilling three-way or a solo bout with a grown-up towy. you'll toast our gorgeous guests of honor as they grow one year older and several degrees hotter. Join them as they unwrap their tantalizing presents. each more delightfully surprising and explosively satisfying than the last. The party's just getting started!