Grop her butt

He didn't need to think twice: He wanted a piece of that. The fact that they were siblings wouldn't stop him -actually, it made things even hotter- and he didn't care about being subtle. He suddenly pulled her blue jeans down and was overjoyed to discover his pious sister was wearing an extremely sexy black lace slim thong which let him grab her ass and massage it without being bothered by a piece of fabrics. "Oh yeah, I like that!" Sam exclaimed, fondling the voluptuous rump. It was as round and smooth as he expected it, but also firmer than he thought. He could play all day with those nice cheeks, fondling them and kissing them, but he was also picturing them bouncing up and down as he would fuck Cat's ass and pussy doggystyle.

He was interrupted by a sudden punch in the face which made his head almost turn around itself and left him stunned and dazed. "Sam, what the fuck?!" Catalina yelled, steping away from him and putting her pants back on. "What the heck crossed your skull? I'm your sister, ¡loco!"

Behind her, he noticed the she-demon had stopped typing on her phone for once and was now giving the pair an incredulous look. "Well, I have to admit it was pretty bold and unexpected. Maybe you should be a little bit more cautious. Not that I didn't enjoy it, especially the part when you had your jaw smashed, it was hilarious. Also, devil almighty, that ass! If you didn't catch me off guard, I would have took at least a few pics."