I know what I know    Maybe I was young and didn't understand  Or maybe I just didn't give a damn  Either way there was a lesson to be learned  I held the fire til it burned  I used to think I was so clever  Now I see that I was just like you    Before I discovered, what I know  Could save you some trouble  Cos I know, what I know, the hard way  Yeah, yeah, yeah-ie...    Listen up and you will know what not to do  Oh... carry on until we carry you  Either way it's taught the lesson will be learned  Why wait until the tables turned    Like you I thought I was so clever  Now I see, that I was just a fool    Until I discovered what I know  Could save you some trouble  What I know, I learned the hard way  What I know, I had to discover  What I know could save you some trouble  Cos I know what I know, the hard way...  Yeah, yeah, yeah-ie...    Mmm, Mmm, Mmm  I know what I know  (You're sure you won't mind)  I know what I know  (You wouldn't have to rewind)  I know what I know  I know what I know  (If I could show you my mind)  I know what I know  (You wouldn't have to rewind)  I know what I know  (You wouldn't have to rewind)  I know what I know  (Rewind)    I used to think I was so clever  But now I see I was just like you    Until I discovered what I know  Could save you some trouble  What I know, I learned the hard way  What I know, I had to discover  What I know, could save you some trouble  Cos I know what I know, the hard way  Yeah, yeah, yeah-ie...  Yeah, yeah, yeah-ie...  Yeah, yeah, yeah-ie...    [Fade out]