After You Get What You Want You Don't Want It

After you get what you want you don't want it.
If I gave you the moon, you'd grow tired of it soon.
But after you are presented with what you want, you're discontented.
You're always wishing and wanting for something
When you get what you want, you don't want what you get,
And though I sit upon your knee, you'll grow tired of me,
'cause after you get what you want,
You don't want what you wanted at all.
Always always changing your mind.
And here's the reason why:
'cause after you get what you want you don't want it,
'cause after you get what you want,
You don't want what you wanted at all.
I know you!