A good joke is like an american schoolchild Within hours, it's spread around the entire room.
Are you making a joke about a school child being raped? This is not a great idea.
It's not about rape, it's a joke. Jokes are supposed to be fun. I don't try to make fun of victims.
Making light of something such as rape of school children is not a good look. Something as serious as this should never be joked about, even if your intentions were to just make someone laugh. You live and you learn, so just wanted to be honest with you!