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
Cos I've been fooled before
And now I'm...

Foolproof
Older and wiser now
And I'm never gonna fall for that old,
Never gonna fall for that old
Fairy tale anymore
Cos I've been schooled before
And cos 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
Cos I've been around the block a few times
Been around enough to know I'm
Coming back for more
Cos I believe that your heart is pure
And cos I'm...

Foolproof
That's what my heart's become