The guy is lucky with his sister - she is a nipple. She's ready to open her mouth for him to stick it in her. Apparently she serves him regularly, because he no longer feels affection for her, but fucks her like a street whore - rough and bold. However, she seems to like this treatment.
Yes, this cum herself almost jumped out of her panties to suck the guy. He held on as hard as he could. But when that blonde offered to fuck her, he couldn't help himself. And so for that he dipped his shaft into her mouth, but only to wet it. And then her asshole just sobbed, taking the pussy inside her. It was a pleasure she had never known before. But now she had been unleashed, too!