Tell her you want more first

From Create Your Own Story

"Mom, I'm still hard."

"So?"

"Well, can you...well...you know."

"What do I know?"

"Can you suck me again?"

"Baby, your dad will be home soon, and I don't think he would like to walk in the door and see his wife on her knees sucking his son."

"But,..."

"No but ...of either kind," she smiles as she says this, "I'll get cleaned up and I think you should do the same, then we will have a family dinner and never talk about it again."

You both get cleaned up and have dinner when the rest of the family gets home.

Neither of you ever talk about that day again, but you think of it often.