Im pretty sure I saw a vid from TS not too long ago where a dad smashed his long lost daughter and it turned out it may have all been a dream. I dont recall step being used once. She even says she was a product of a one night stand with him and her mom years ago. Now Im not a huge fan of dream sequences, but I wonder if you could use that as a way to say he didnt actually bang his own daughter, it was all in his head.

If so, I could see a scene for Family Strokes if its just one f/d par, or even a DS episode where the dad has a dream about a foursome with his daughter and his best bud and his daughter. And the twist would be when he woke up, he finds out they all shared the same dream! WILD! ;-)