On a hot day, the girls teach the boys how to stay cool by imagining they're on a tropical beach.; Archie and Reggie come up with a plan to stop Betty and Veronica from staring at the handsome lifeguard.; Archie tries to cover up the bikini-clad Veronica to prevent other boys from staring at her.; Disturbed by all the reminders of Archie that Betty has put up around the house -- including a life-size waterproof Archie in the shower, a recording of Archie's voice saying romantic things, and Archie photographs on her ceiling -- her dad tries to convince her to play hard to get.; Li'l Jinx is picked to star in the school play.