Look at this unbelievable interchange (below), starting with The Donald's initial tweet:
Demi Lovato never forgets to bring the spunk!
Obviously her sass was why she was asked back! DUH Demi.
While Simon and DD have an uber entertaining tension-filled dynamic on-screen, what does our gurl think about Simon's off-screen life???!
Was Demi as shocked when she heard that the shamelessly honest judge was going to be a daddy??