Do the twins understand them?if not do the parents think the twins are speaking gibberish.
Also do the twins remember being human/ do Ford and Stan still remember them.
Last I 100percent bet the twins will try to run the moment the Euclid and scalene turn their backs.
The twins couldn't really understand them at first. They were too busy panicking to even hear them speaking. It's takes time for them to really register the language, even if they never heard it their new bodies do. And yes, they thought the kids were just squeaking randomly because their new body being young isn't really accustomed to anything other than the cryptograms. It'll take a while for their English to make sense.
And yes, they remember everything, because like I mentioned, the fabric of time went haywire it's just placing already existing stuff in where a time hole has been made without much adjusting.
It's like when you have a water bottle, but its cap is lost, so you take whatever other bottles cap matches it even if it's not its original place. It still works for now. While Stan and Ford are left with the capless bottle, aka the twins missing, creating a time whole in their world.
They tried escaping at least 74 times already, but they're always caught. Euclid and Scalene just think of it as the twins playing and messing around (especially with the lack of communication) not them trying to get away 🙃