That's

Oh, come now boys, don't give me that
I've had it all before
If not inside my overcoat hanging outside my door
A silver plaque in Prussian blue
Bears these few words upon

Don't ever say that that's okay
'Cause that's where I come from

Now if you don't and I know you won't
Understand what that means
The answers obviously to look
In midsummer night's dreams
Where if he will permit you to
You'll see how it begun

But please, don't say that that's okay
'Cause that's where I come from

And if you ask me why we multiply
I'll tell you when divided
(Two from two leaves hope)

But please, don't say that that's okay
'Cause that's where I come from

And if some day she'd want to stay
On our mum's kitchen floor
Providing he's not underage
I see no reason for
Me to go out without a doubt, as he'll be moving on

Never to say that that's okay
'Cause that's where I come
That's where I come
That's where I come
That's where I come
And the needle isn't stuck