All of your friends say they're gonna miss me Even your mom says she would've picked me If she didn't have a stupid son I probably would've been the one 'Cause if I'm a 10, you're a 5 on a good day Never even thought you were hot in the first place I gave your ugly ass a chance 'Cause I thought you were a better man I'm not there, but I'm not gone Good luck moving on, 'cause, baby I'm the world's best ex-girlfriend Oh, you're never gonna forget me Until we're both dead Oh, you know I'm gonna haunt your dreams Wherever you go, I'll be in your head Making sure you never fall in love again World's best ex-girlfriend I'm the one that got away, I'm your worst regret When you add a double Ts, that's a triple threat Now every girl you ever date is sleeping in the bed I made 'Cause I'm not just funny, I'm smart and hot Just look what you lost, 'cause, baby I'm the world's best ex-girlfriend Oh, you're never gonna forget me Until we're both dead Oh, you know I'm gonna haunt your dreams Wherever you go, I'll be in your head Making sure you never fall in love again World's best ex-girlfriend I can do better, that's a fact If you thought you'd do better, you're a maniac This song's so catchy If you hear it on your radio, I hope you crash I'm the world's best ex-girlfriend Oh, you're never gonna forget me Until we're both dead Oh, you know I'm gonna haunt your dreams Wherever you go, I'll be in your head Making sure you never fall in love again World's best ex-girlfriend I'm the world's best ex-girlfriend