prove it if you can!

"It's true!" Lauren objected.

"Then prove it." Dennis said. "Go up to those people who just called you a boy, and convince them you're a girl!"

"N... no problem!" Lauren said.

"Oh, and don't tell them you are, or flash your crotch again." Dennis added.

"I... of course!" Lauren said. "I don't need to do that!"

Lauren turned (unwittingly flashing her backside to Dennis, Britney and Kyle again) and shuffled barefoot over towards the strangers. It was a group of three girls and two guys, all around her true age, their early 20's. They all turned and looked in confusion and amusement as Lauren, butt naked except a ball cap containing her long hair, shuffled over, clutching her bare crotch.

Lauren suddenly realized she had no idea what to say. How could she convince them she was a girl? What was the right action? Her mind moved slowly, overwhelmed with shock and embarrassment....