(This is a custom clip and I can make one for you too! Just email me at emmasecretmln@yahoo.com or send me a DM) It's your son's birthday, and you walk into his room naked. He's shocked but you tell him it's nothing to worry about and that you have a very special gift for him. You tell him this is something you've waited a long time to do, and move in to kiss him. You reach down and start rubbing his crotch, mentioning how big he feels. You encourage him to get naked, saying you haven't see him naked in a while and you want to see what came out of your pussy all those years ago. Tell him you made every part of him, including that cock, and you're going to take care of it because no else can take care of it like you can. Ask him to turn around so you can see everything, looking at his ass and mentioning how you use to spank it when he was little. Lay him down on the bed. The rest would be you giving him a blowjob, while talking all sorts of taboo stuff. Talk about how excited you were when you found out you were pregnant with a son, because you knew some day you'd be able to do this with him. Giving birth to him, breastfeeding (confessing that it actually felt really good to you, turned  you on so much), etc..