It's 7:30 p.m. and the Cuddle Party is about to begin. The 20 or so people who fill the Bodymind Institute in Los Angeles are all wearing pajamas, and a few look nervous. Their anxious expressions say, "I hope this is fun because I'm standing here in my pajamas with a bunch of strangers." They range in age from early 20s to early 60s and represent all races, shapes and sizes. Everyone wears a name tag. They have come to experience "an affectionate play event for adults, designed to provide a space to explore and enjoy touch, nurturing and communication"...