You think you're such a cool kid And everybody likes you Know you think I'm stupid Say you know more than I do But what you'll never understand Is I used to be such a fan But now you're such a cool kid It's like I don't even know you Yeah I'm gettin' really sick Sick of how sorry sounds Comin' right out your mouth, oh Don't get too comfortable 'Cause I might not be there Next time you turn around So what would you do if I leave and don't come back? I hope it breaks you in two (I hope it breaks you in two) If I gave back all the pain that you put me through What would you do? (Hahaha) I've always been a nice girl I'm pretty understandin' But you mess up my head, boy And you're takin' me for granted And you're probably gonna throw a fit (throw a fit) When I call you out on all your shit (all your shit) Yeah, I used to be a nice girl I bet you wish it lasted Oh I'm getting really sick Sick of how sorry sounds Comin' right out your mouth (out your mouth), oh Don't get too comfortable 'Cause I might not be there Next time you turn around So what would you do if I leave and don't come back? I hope it breaks you in two (I hope it breaks you in two) If I gave back all the pain that you put me through What would you do? We'll make plans and I won't show up I won't listen, I'll interrupt When your birthday comes, won't answer ya 'Cause so what? So what? I'll go out and kiss your friends like Oh, my God, get over it Yeah, go get drunk so you forget I'm gone What would you do if I leave and don't come back? I hope it breaks you in two (breaks you in two) If I gave back all the pain that you put me through What would you do? (Ooh) What would you do? (Ooh) What would you do?