Perfect insertion perfect fit

His sister didn't give him the go ahead , " Comparing parts " as they called it when they were little and growing up together. Now she didn't invite his insertion but she did not stop or resist his taboo entrance . He just couldn't resist slipping his dick in her pussy just to know that he did it. After all her underwear was off first . True , he pulled them off of her very slowly and she said not a word . Then she watched him pull his briefs down in one fell swoop .