Petite Step-Daughter Takes Step-Dad's Cum After Having Sex Talk

My step-daughter Sky and I have a distant relationship but when my wife asked me to help I have no problem talking to her. I wanna help grow the family with them, I walk into Sky's room and hear her having a sketchy conversation. I ask her what the call about after she hung it up as soon as she saw me in her room. Sky gives me a really difficult time answering but eventually, she spills it. Her friend just got pregnant and they are all freaked out, Sky admits she doesn't know much about how babies are made. She knows the penis goes in the pussy but she doesn't know how to make it cum so that a girl gets pregnant. Sky asks for me to help to show her EXACTLY how it's done... Lucky for her I am shooting blanks...