Younger sister asks to teach her anal sex

The girl was watching something in a laptop in her bedroom. Then she went to her brother and asked him to teach her to fuck in the ass. She was scared and it was not clear how a member could fit there. She was very afraid of pain. Anal sex with a sister excited a guy and he happily began to teach her. He smeared her hole, gently put his dick in there and began to gently fuck.