A casual weekend hangout is thrown off course with the arrival of an unexpected guest. “Jellyfish,” directed by Gabe Ross, is an absurd comedy of quick-witted lunacy and sudden behavior shifts. Gabe and Will are relaxing on a beach-front porch when their friend, Eli, shows up to join the party. But he’s not alone. Joining him is his erratic cousin, Ian, who quickly makes things awkward for everyone. Gabe and Will try to keep things light but an incident in the ocean derails that possibility. With its sketch comedy stylings and Beach-Boys-esque musical finale, the film races through an intense cycle of mood shifts and man-child antics. -KA. A No That's Okay Film. Director: Gabe Ross. Starring: Ian Abramson, Gabriel Bernini, Will Duncan, Eli Leonard. Director of Photography: Jake Gibson. Second Cam: Jeremiah Durian-Williams. Assistant Director: Clara McHale-Ribot. Music by: Luke Macdonald + Jake Lichter.