Fuck Sue!

Ben grinned and commented for the 'audience' "This is my sister... and this is what she likes to do for me because she is so horny she doesn't care whose dick, but she likes mine most of all."

"Sue... down on all fours!" he commanded.

She was too horny to care, it was true, she turned about to give Ben access to her pussy and her ass.

Ben thrust into her and she shrieked. He thrust again and she began to edge one of her hands down to her clit to really get off. Once more he pushed into her, and then he didn't have to do much, she swung back and forth, eagerly fucking herself on her brother's cock. It did feel good. Oh god so good. If she had of know this before she would have been fucking him a lot more a lot sooner.

He filled her so completely with each stroke that she was soon half laying on the ground with her butt raised high for maximum feel.

"Time for another position, sister..." he prompted.