DS who is 7 walked in on us in the middle of the night and caught us at it. DH saw him straight away, was right at the point of delivery, DS must have seen a couple of seconds worth though. This morning he saw the neighbour and told her all about it, including a rendition of the funny noises mummy was making which apparently were so loud they woke him up. We were a bit drunk, had just sent the babysitter home. I checked on him in his room and he was sound asleep, closed door.
How can I stop him telling everyone?