Who is this?

Lauren splashed wildly in the tub, struggling to keep as much of her body hidden as she could with just her limbs and a rubber duckie.

"Cute duck!" The guy laughed as Lauren struggled to keep herself hidden.

Just then Vanessa poked her head in.

" Hey Dave, I see you two have met!" Vanessa said.

"Yeah, I assume she's your sister right?" The man said. "I've heard of Lauren, but who is she?"

"What do you mean?" Vanessa asked. Both her and Lauren were confused.

"Well, Lauren is your older sister right?" Dave said. "So this must be your younger sister. What's her name?"

Slowly Dave's meaning dawned on both Lauren and Vanessa. He thought Lauren was younger than Vanessa! Lauren was humiliated. Vanessa was thrilled, knowing how shameful that would be for her snooty sister.

The question was should Vanessa correct him or keep the ruse going?