A Fixed Number of Times

There's a number There's a fixed number of times That I can fake it Smile and say goodnight Or shrug my shoulders And act like nothing's wrong I want to help you But I'm just not that strong You see, there's a half life For nearly everything Iron 60 Cadmium 116 So how much longer Until we're halfway there? Until it's pointless? Way beyond repair? There's a number There's a fixed number of times That I can take it Before I lose my mind And make decisions That leave you all confused Like a shotgun wedding Or a Spiderman tattoo Choose a rhythm And ride it into war I hate to tell you But that's what rhythm is for It's to send a message Or simply boost morale No one's dancing Because no one's quite sure how There's a number There's a fixed number of times That I can change course And stay inside the lines So don't you tempt me Because I'll turn this car around Starting over Isn't backing down