the lifeguard

"What are you doing?"

Natalie looked over and saw the lifeguard, a man about her age stomping over.

"This isn't a naked beach, you can't just run around naked!" He said angrily. "It's illegal! Is this some kind of game?!"

"Uh..." Natalie said, too stupefied to talk. She clutched her bare body in shame, unable to respond.

Beth, who was watching this nearby, got an idea. Grinning at the mischievous plan forming in her mind, she walked over.

"Natalie! There you are!" Beth said sternly. "You can't just run off like that, you scared me!"

She turned to the lifeguard while Natalie stared at her in confusion.

"Thanks for finding my little sister." Beth said to him, increasing Natalie's confusion. Sister? Little? What was she talking about?