No, he really isn't. But he tries, so that must count for something, right?

"OK, I'm not really sure what you just said, because I'm pretty sure half of that wasn't even English."

He follows after without protest anyway, and once they're outside, can't hide the slight amount of wide-eyed wonder at actually being in London. At this point, he's pretty much ready to believe anything he hears about Milliways.

Also, Mary should be pleased to discover, he's not really much of the wondering off type. If anything, he's the can't-really-shake-him-off type.