Thats - Gilbert Osullivan

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

And if some day she should want to stay
On our mum's kitchen floor
Providing he's not under age
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 from

That's where I come
That's where I come
That's where I come
And the needle isn't stuck