Foolproof that's what my heart's become And i challenge anyone to break in I challenge anyone to make me open up the door 'Cause i've been fooled before And now i'm foolproof Older and wiser now And i'm never going to fall for that old Never going to fall for that old Fairytale any more 'Cause i've been schooled before And 'cause i'm foolproof And i dare anyone to try Not a care in the world have i As long as i am foolproof Oh no they can't fool me 'Cause i've been around the block a few times I've been around enough to know i'm Coming back for more 'Cause i believe that your heart is pure And 'cause i'm foolproof Foolproof that's what my heart's become