If I have learned anything from my Sims family, when a child doesn't see his father enough, he starts to jump up and down, and then his mood level will drop... until he pees himself.
Do bear in mind that there isn't any swimming in Sims 4
. So you can no longer lure them into the pool and delete the ladder
, which was so iconic to the series, they might as well have removed the green diamond thing.