Who can it be knocking at my door?
Go 'way, don't come 'round here no more
Can't you see that it's late at night?
I'm very tired, and I'm not feeling right
All I wish is to be alone
Stay away, don't you invade my home
Best off if you hang outside
Don't come in, I'll only run and hide

Who can it be now?
Who can it be now?
Who can it be now?
Who can it be now?

Who can it be knocking at my door?
Make no sound, tip-toe across the floor
If he hears, he'll knock all day
I'll be trapped, and here I'll have to stay
I've done no harm, I keep to myself
There's nothing wrong with my state of mental health
I like it here with my childhood friend
Here they come, those feelings again!

Who can it be now?
Who can it be now?
Who can it be now?
Who can it be now?

Is it the man come to take me away?
Why do they follow me?
It's not the future that I can see
It's just my fantasy

Who can it be now?
Who can it be now?
Who can it be now?
Who can it be now?

Oh...Who can it be now?
Oh...Who can it...Who can it...
Oh...Who can it be now?
Oh...yeah yeah yeah

First track & second single from Men at Work's 1981 debut album, "Business as Usual."