The Lifeguard is a character who appeared in the episode .
When he heard a group of girls call for help he came towards them, all thinking Ren is a sand-crab, he smacks Ren with his bathing trunks and then uses wrestling maneuvers.
Ren later spots four voluptuous female lifeguards practicing mouth-to-mouth resuscitation (which turns out to be French kissing), Ren tries to fake drown which prompts the lifeguards to pull him onto the shore, unknowingly, the same hairy and beefy male lifeguard is the one to volunteer and stick his hairy tongue inside Ren's mouth while breathing down his airway.
In the end of the episode Ren and Stimpy needed to rub sun tan on him in order to make one of the girls happy, when the Lifeguard noticed that Ren and Stimpy were the ones who were rubbing him he started chasing them backwards until they jumped off a ledge.