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
Foolproof, older and wiser now And I'm never gonna fall for that old Never gonna fall for that old fairy tale anymore 'Cause I've been schooled before
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 Been around enough to know, I'm coming back for more 'Cause I believe that your heart is pure
That's what my heart's become