Alien. That word. [ He smirks a little, the brightness never really leaving his eyes. ] Alien from outer space, yes, I am that. By the strict definition of the word, we're all alien! I'm just a bit cooler. No offense, my fine storytelling friend, but I do have a ship so that automatically qualifies me as cooler.

[ He does, at least, recognize what definition the younger man was going for with alien and it amuses him. But he has to boast about the ship because it is cool and he misses his old girl. ]

Oh, they do, that's the standard greeting where I'm from. Wave hello, check the pulse, carry on your way. But that's why I'm an alien! [ Cheeky wink. ] If you must know, another way to tell us apart is that humans — with rare exceptions — absolutely do not have the same appreciation for bow ties that Time Lords have.

[ Thank goodness Hilda had managed making some for him here, and he tugs on his now to emphasize it. Catastrophe otherwise! Is he also vaguely and non-seriously implying that all bow tie wearers might possibly be Time Lords? Perhaps. ]

The others never really liked living among humans, but I've been fond of Earth a long while now.

[ Another attempt to skirt around a straight answer there, though he wasn't careful enough not to use the past tense referring to the rest of his species. ]