Stay and watch for a bit longer

You stand there staring in your eyes never leaving Eric's perfect ass. You could see his muscles contracting as he slammed into your sister over and over again.

"Oh yeah, take that fucking dick you god damn whore! Oh yeah, you are my slut aren't you?" You hear Eric say in a powerful voice.

"Oh yes, fuck me Eric, god you are so fucking good. Use your slut, use me like a common street whore!" Your sister responds between moans.

You couldn't believe you ears, but at the same time you begin to remember what you said to your own father as he fucked you. You loved fucking him, you loved how it felt like he needed you, had to have you. You just wanted to make him feel good, you honestly would have done anything to help him cum. You bite your lip again as your hand slides down to your bare pussy band begin to tease yourself. You spread your pussy open allowing your fingers to brush against your clit. You gasped slightly as you felt a jolt of electricity shoot through your body. You covered your mouth quickly watching the hottest thing you've seen happen right in front of you.

Suddenly Eric pulled out and dragged your sister to the edge of the bed, both of them were now nearly facing right at the door. You heard a VERY loud slapping sound as you see him spank your sister. He didn't seem to be holding back at all. With each slap you heard you sister moan, you looked at her face and she just seemed to be lost in lust. You looked up and saw Eric's dick and it wasn't as big as your dad's but it was much thicker. Your first thought was that if he tried to put that in you, it would split you apart. You stared at his cock as he stroked it and slapped it on the ass of your sister, your eyes moved up his abs, his muscular pecs, arms, and then saw him staring right at you. He never blinked, just smiled and shot you a kiss before spitting on his cock and sliding it in.

"Oh god! Fuck yes fuck my ass!" You hear your sister scream.

Your eyes widened as you realized he was fucking her asshole now. He bottomed out inside of her, this was definitely not the first time that they had done this. You locked eyes with Eric again and he waved you in, inviting you to join.