[He can't really, he never needed to know, it was the kind of thing you had to learn. He does manage to catch a few words, namely the part about locking Vexen in there by mouthing the words to figure it out.

When he catches that, he bursts out into laughter.]

Locking Vexen in here would be pretty awesome!

[Demyx smiles and offers a half shrug, sorry, he didn't get the rest. At least he's a little cheered up, as much as someone without a heart can be. He certainly acts as though he feels a little better. Demyx thinks he should, having someone with him for a little while, he imagine that feels pretty good after everything so far.]