I wear and smile and some blush slapped across my face
But underneath there's a monster that can't be tamed
I'm 'bout to lose it, I feel it moving
You try to test me for weakness then go too far
Instead I'm caving I'm eager to make my mark
You'll never forget just who you've messed with
Don't underestimate me
I've got a fire burning inside
And if you try to break me
I can't promise you I'll be kind
I'll show you what I'm made of
Just when you thought I'd given up
Don't underestimate me
I've got a fire burning inside
I know the drill you'll come back with a story to tell
And it'll be that story that I know so well
You didn't mean it
You're heart is bleeding
And I'd like to think it's true
But I know you better than you do
I tell you
Don't underestimate me
I've got a fire burning inside
And if you try to break me
I can't promise I'll be kind
I'll show you what I'm made of
Just when you thought I'd given up
Don't underestimate me
There's a fire burning inside
It's not healthy what you're playing
It's not healthy what you do
And you'll deem yourself as crazy
If you think I'm scared of you
And you might want to be careful
Where you look and where you step
You wouldn't want to wake up
With a demon in your bed
Don't underestimate me
I've got a fire burning inside
And if you try to break me
I can't promise I'll be kind
I'll show you what I'm made of
Just when you thought Id given up
Don't underestimate me
I've got a fire burning inside