Mark buys it!

Mark stared at Alexis in confused shock. All Alexis could do in response was cup her naked breasts and stand awkwardly, most of her body exposed. Finally Mark seemed to take in what Donna had said and a slight grin appeared on his face.

"Oh Alex!" He said, shaking his head. "I thought for a moment you said Alexis..."

"Oh, can you imagine?" Donna laughed as Alexis's jaw hung in shock. "Alexis, wearing whitey tighties and water wings? No, this is my brother Alex."

"Huh." Mark shook his head, still confused, but believing Donna.

In fact, he noticed this nearly nude figure before him looked like Alexis, but that was too strange, too baffling to accept. Meanwhile all Alexis could do was cup her minuscule breasts and stand mortified before everyone. Her own date was seeing her topless, and thought she was a boy! Her self image and self esteem were fractured by the humiliating strangeness of the situation...