Actually this did happened irl in my class.... So i was so fricking mad at my ex BFF bc she was being a brat and i was like yelling at her that "SHUT THE F**** UP OR I'LL KILL YOU" and my friends was like holding?? my hand and yelling back to me that to stop.. and while this happened my ex BFF was just smileing? and laughing a little and later she laughed louder and i got a little bit scared so i stoped and walk away and whispering to myself that "shitshitshitshitshit.." so yeahh xd