Oh you Arnold, trying to pass yourself and Mr. De Vito off as twins. I would see that movie mostly for De Vito, dude's a fucking riot in It's always Sunny and has always been a fantastic actor.
Any idea could be a good one, even if it doesn't always look it. Though how you'd get a sequel out of Twins is beyond me, and I feel like instead of calling it Twin 2, call it Triplets and add someone else in there who make the "born at the same time from the same womb" thing even more insane, like put an average looking Chinese man as the lost Triplet, that's called comedy