Okay kiddo, so let's say someone did something really bad, like hurt or even kill another person. That person might try to come up with a reason why they did it called a defense.
One defense that people might try to use is called the rough sex murder defense. They might say that the person who got hurt or killed actually wanted it to happen and asked for it. They might also say that both people involved agreed to do some things that could hurt or even kill them, like choking or hitting each other.
Now, this defense can be very tricky because it can be hard to prove that the person who got hurt or killed actually wanted it to happen. And even if they did, hurting or killing another person is still very wrong and not okay.
So remember, just because someone might try to use the rough sex murder defense, that doesn't mean it's a good reason to hurt or kill someone. We should always treat other people with kindness and respect, even if we don't always understand their choices or actions.