"Give it a couple of weeks." It's a joke, a reference to the number of canes he's had to ditch over the last few months, when something came up and running around with it stopped being viable. Not that he plans on having to lose the mask any time soon, intentionally or otherwise, but he can't quite help but take a shot at himself.

Nor can he stop from answering immediately, when Tony suggests the holodeck. "I promise." It's not quite as good as the real thing, he thinks, if only for the lack of lasting progress, but -- God, yes, please.