Your bully told them not to waste a drop of cum so when he finished cumming on your sister's tits your Mom made sure to clean it off using her mouth to do it
Your bully knew your wife was ovulating when he decided to seduced her. Once she felt him quivering inside her, she quickly tried to dismount. He grasped her tighter and finished the job inside of the love of your life . Congrats on the pregnancy!