They were planning an overwatch lan party at school , so they studied the best ' play of the game ' video the had: they binge watched columbine camera footage
Are you upset that you saw this happening at your school?
No, I'm just joking around. I dont care about columbine.
Even if you don't think it's a big deal, school shootings are very tragic events for those involved, and for everyone who was even distantly related.  It's no laughing matter for most of the country, so it's not something that should be the subject of jokes.