HOW TO STUFF A WILD BIKINI, the sixth entry in American-International’s “Beach Party” series, attempts to breathe new life into the tried-and-true  formula of sun, sand, surf, songs, and corny jokes. Frankie Avalon and Annette Funicello are still around as Frankie and Dee Dee, but in this go-round they’re separated; he’s in the Navy stationed on the tropical island of Goona-Goona, while Annette has to contend with the romantic enticements of Dwayne Hickman .

Frankie’s part amounts to a cameo, enlisting local witch doctor Buster Keaton (!!) to keep those girl-hungry beach bums away from Dee Dee (while he frolics unfettered with lovely Irene Tsu !). Keaton’s magic ain’t what it used to be, so he has his daughter conjure up a knockout named Cassandra, who first appears on the beach as an animated bikini. All the boys go ga-ga for Cassandra, including a go-go ad man named Peachy Keane…