They are Coming to take me away...

Remember when you ran away
And I got on my knees
And begged you not to leave
Because I'd go berserk?
Well. . .

You left me anyhow
And then the days got worse and worse
And now you see I've gone
Completely out of my mind
And. . .

They're coming to take me away, HA HA
They're coming to take me away, HO HO HEE HEE HA HA
To the funny farm
Where life is beautiful all the time
And I'll be happy to see
Those nice, young men
In their clean, white coats
And they're coming to take me away, Ha-haaa!
...

by Napolean XIV

Who is me in this case? Gerard Vanderleun explains.