The only time the babies are willing to put up with Palpatine is when they need to soil their diapers (Yes, I'm suggesting they literally crap on him).

Anakin initially thinks they're being as loud as possible when Palpatine is simply near. Then he makes the mistake of letting him hold one and finds out how wrong he was.

Uh...what would happen is some ran on test on the twins to see who the parents are?