My Sim and her husband were running to the back yard to yoohoo in the rocket ship. It had been raining all day and the husband slipped in a mud puddle and the wife slipped in it right after and at the same time their daughter comes home from school and started laughing. The thing is that the only reason the daughter was laughing was because she had a playful moodlet from school but it was timed so perfectly that it seemed like the daughter returned home just in time to see her parents biff it and laughed at them.