Yes!

"I think I know the way big brother." Cindi said with an innocent smile as she began walking towards the rec room.

Adam watched as his bikini clad sister led the way as she walked down the corridor in her 'stripper heels' and he felt his cock get even harder as he looked over her nearly naked backside.

The tiny string tied behind her back, holding her top on, and the one disappearing between her firm ass cheeks didn't leave anything to the horny boy's wild imagination as he noticed that he couldn't spot a single tan line on Cindi's well toned body.

"Damn, what a body!" he thought to himself as he admired her tight little ass and mile long legs moving just a few feet in front of him, "I'd love to pound the hell out of that."

"Come on." he quickly reminded himself, "Stop it. She's your little sister."

What happens when they get to the rec room or do they get interrupted on the way?