Eventually, the conversation turned from "the swap" to a more general discussion of the sexually charged atmosphere of the last few days: the loud, ubiquitous sex at night, the increasingly frequent nudity on display each day. Though I'm almost never one to kiss and tell, I found myself telling John and Jason about our experience at Havasu earlier, stumbling upon Tom and Sam and then having sex in the creek. As it turned out, both Jason and John had similar stories to tell. John told us that he and Lori had snuck off and had sex at the creek as well. And Allyson had given Jason a blowjob after they'd...