Keep in mind, reasonable force might include running away.
Depends on the state. If you’re in a Stand Your Ground state, there’s no duty to flee. If you aren’t, then you probably have a duty to flee an attacker if possible, unless this is at your house, they have entered your home illegally and refuse to leave.
Honestly, it will probably do little or nothing. A lot of adolescent boys make a habit of saying whatever they think is shocking and will get a reaction, and kids that age in general try ideas on like they’re changing clothes. It’s just generally not going to “stick” in the way you think. Once the next shocking thing comes along they’ll drop it and probably never think of it again until it’s 2040 and they think back about what idiots they were as kids.
Although in the era of social media, they may never get the chance to do so.