>> even though you know it's anonymous, you don't know who these people are. why do you think you read it? >> because if one person says something, it just keeps coming. you want to know what they're saying. >> another favorite technique for social combat is what teens call a tbr. it sounds for "to be rude." if you preface the most vile insult with tbr on social media, it seems you can pretty much get away with anything. zack sent us a video about a tbr he orchestrated against a girl. the sniping went on for 16 hours and involved nearly a thousand comments. >> i deleted it because i knew you guys were going to be watching me. i was like, i think they're going to be a mean person. so i deleted all my to be rudes, wink, wink, don't tell my parents. it was rude. i'll admit. whatever. she tried to cook me. i cooked her. how it works.