What? Do you look like... Do I look like that? Look at that shirt. Wait... [He looks down and then looks back before shrugging] Well, it looks better from this angle I guess.
Hey, it does look cool! Don't say that... We're very cool. This is cool...
[The Doctor blinks for a moment before bounding forward] Well, I think that only applies when... [Before he can finish, he closes his eyes tight for a moment and reaches out, poking the other roughly in the forehead and then opens one eye]
Oh, look at that! Nothing happened! What a relief! I was actually curious as to which one it would be. I was thinking implode, but maybe it was explode... [And with that he laughs and ruffles the other's hair]