Can you tell who's straining for a gold medal and who's going for a pearl necklace? Play Spot the Porn.
Gymnastics stud Paul Hamm.
Table tennis ace Jun Gao.
Weightlifting powerhouse Casey Burgener.
Judo sensation Ronda Rousey.
Volleyball star Danielle Scott-Arruda.
Field hockey machine Tiffany Snow.
Triathlon technician Hunter Kemper.
Swimming phenom Michael Phelps.