Miley Cyrus

Was Pulling a Knife a Total Overreaction?

Okay so one of my friends the other day overheard a guy talking about his younger sister (she is like 15 and the other guy looked like he was around that age as well) and he was saying stuff like “That chick is hot”,”I’d get with that” and what not, and my friend went over to him and pulled a knife and told him that if he ever talked that way about his sister again he would kill him. I mean it wasn’t much more than a large pocket-knife and I know him well enough to know that it was just for theatrics, but do you think he totally over reacted?
I think to some degree it was really sweet that he’s so protective of his sister, but I mean he is 17 and a big guy! And I don’t mean that like he’s overweight, I mean he is a a big, strong dude, so I don’t think the pocket-knife was really necessary to get his point across.
So what do you think? Is it sweet that he cares so much or a total over reaction?
someone said something about school so I will just add that they are all home-schooled.