Your brother asks for a blowjob as a birthday present

This boy's birthday has come and his sister doesn't know what to give him. They start talking together on the couch and come to a very morbid deal because their brother asks his aunt for a blowjob. She thinks a little at first and makes an innocent face, like "I don't do these whores." But when he touches his brother's hot cock, all preconceptions disappear and it doesn't take long to put his tail in his mouth. It gets so hot that it is then put on all fours on the couch to start fucking her, forgetting that they are brothers.