I had an idea for a game, but I'm not sure whether it's quite allowed.
It does involve a child (around 6-8), in a non-sexual context.
The guy's wife left him 3 years ago, left the kid. Last he heard from her was the divorce papers. Dad has a new girlfriend, been together a while... You know where I'm going.
Provided the child isn't involved sexually (obviously), would this be allowed?