Lyrics:

There's a monster that lives 'neath your bed?
Oh for crying out loud..
It's a futon on the floor
He must be as flat as a board

There's a creature that lurks behind the door?
Though I've checked there fifteen times
When I leave then he arrives
Every night

Tell that monster that lives 'neath your bed
To go somewhere else instead or you'll kick him in the head
Tell that creature that lurks behind the door
If he knows what's good he won't come here no more
'Cause you're kicking his butt at the count of four!

Goodnight Demonslayer, goodnight
Now it's time to close your tired eyes
There's devils to slay and dragons to ride
If they see you comin' hell they better hide
Goodnight goodnight, goodnight
Goodnight my little slayer, goodnight

Tell the monster that eats children, that you taste bad
And you're sure you'd be the worst that he's ever had
If he eats you, don't you fret, just cut him open with an axe
Don't regret it, he deserved it, he's a cad

Tell the harpies that land on your bed post
That at the count of five you'll roast them alive
Tell the devil its time you gave him his due
He should go back to hell, he should shake in his shoes
Cause the mightiest, scariest, creature is you

Goodnight demon slayer, goodnight
Now it's time to close your tired eyes
There are devils to slay and dragons to ride
If they see you coming, hell they better hide

Goodnight, goodnight, goodnight
Goodnight my little slayer goodnight

I won't tell you, there's nothing neath your bed
I won't sell you, that it's all in your head
This world of ours is not as it seems
The monsters are real but not in your dreams
Learn what you can from the beasts you defeat
You'll need it for some of the people you meet

Goodnight demon slayer, goodnight
Now it's time to close your tired eyes
There are devils to slay and dragons to ride
If they see you coming, hell they better hide

Goodnight, goodnight, goodnight
Goodnight my little slayer goodnight

Goodnight, goodnight, goodnight
Goodnight