Make her earn it

"Pick you?" asked William. "What are you talking about?"

"I know you have the hots for Priya. All the boy do. I've been playing second fiddle to her all of my life, but she doesn't have this ass!" She turned around and smacked her ass.

William got up. "Leela, who said this was a competition?"

"I know how this works," said Leela, looking over her shoulder, so her ass was still pointed at William. "I know how it usually ends, but I'll do things for you, Priya won't."

"Look, I know you find me sexy. I know you want to be my lover. Wait, what will you do for me Priya won't?"

"Anything!" said Leela, "you want to fuck me up the ass? I bet that tiny ass Priya won't let you do that to her."

William smiled. Priya had a nice ass for her size, it wasn't a big spankable ass like her sister, but it was a cute bubble butt. "Prove it."

Leela did a slow, sultry striptease, being sure to keep her ass facing William. Soon she was naked. She sank down to her hands and knees and crawled to an easy chair.

"Ready?" She asked.

William smiled. He was feeling stronger, and Leela's ass certainly looked inviting.