Light-hearted and mischievous, flirting is one way that adults have fun. There’s more or less an implicit understanding between the two parties that what might happen—what could happen—in all probability isn’t going to happen. But, nonetheless, isn’t it erotic fun to at least imagine its happening? In fact, one or both parties might be constrained by another romantic relationship, or (just as likely) a conjugal one. Still, both parties are interested, so that even if they can’t fool around for real, they can at least “play” at fooling around.