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.
A girl who looks like a nerd called a new guy she knew home and had sex with him. At first he groomed her on the bed for a long time, and then he did stick her in her tight hole.