Who Dunnit?

Was it you or was it me? Or was it he or she? Was it A or was it B? Or was it X or Z? Was it you or was it me? Or was it he or she? Was it A or was it B? Or was it X or Z? Was it you or was it me? Or was it he or she? Was it A or was it B? Or was it X or Z? Was it you or was it me? Or was it he or she? Who done it? I didn't, I, I didn't do it. I, I, I didn't, I didn't, I didn't do it, I, I, I didn't, I, I didn't do it, I, I didn't, I didn't, I, I didn't do it, I didn't do it, I didn't do it. (Oh!) We know, we know, we know, we know, we know, we know, we know, we know, we know, we know, we don't know, yeah, we don't know, yeah, we don't know, yeah, we know, we know, we know, we know, we know, ke know, we know, we know, we know, we know, we know, we know who did it. (So!) Was it you or was it me?...