When the characters get upset, they can slap each other. I don’t know if you’ve noticed, but there are two types of slap. There’s one slap where they rear their arm back and then whack and it’s as if they’re breaking their jaw. And there’s another one that’s kind of an insulting British Army slap. Whenever you have people of the same gender slapping, they use the really hard slap, like a man slapping another man or a woman slapping another woman. But whenever you have a man slapping a woman, or a woman slapping a man they use the polite slap. Because before, when we had the strong-arm slap, and you had a husband slapping his wife, it rubbed a lot of people the wrong way, just from the domestic violence point of view. And that was one of those things where we were right on the edge and being very careful, but not losing the feature.
Will Wright w Game Design: Theory & Practice Richard Rouse III