It's SPOCK'S birthday. Shot is on SPOCK and KIRK walking down a noticeably deserted corridor.
KIRK: You know, Spock, I think you're beginning to get a lot more human.
SPOCK: Why, thank you Jim.
KIRK slows to a stop and holds his arm out in front of SPOCK, causing him to stop too.
KIRK: 'Thank you'?
SPOCK: Yes, Jim. A phrase of gratitude. But you know that.
KIRK: Of course I know that! But... Spock, you usually take that as an insult, not a compliment!
SPOCK looks thoughtful, before continuing to walk. KIRK catches up to him.
SPOCK: Perhaps I have... chosen to embrace my humanity.
KIRK: (through concealed laughter) Spock... you embracing humanity, embracing emotionalism? You make me laugh! It'll make Bones laugh too, I'll bet!
SPOCK: (sighs) Is it so hard for you and Dr McCoy to believe that, from time to time, I embrace my human half?
KIRK: (stopping in front of a door) (seriously) Yes. (after a beat) It is for everyone. Anyway, here we are!
The door opens, revealing a room of Starfleet officers, among them MCCOY. On the wall is a birthday banner. A chorus of "Happy birthday"s and "surprise"s are shouted.
SPOCK: (shakes his head) Illogical and emotional humans.
KIRK laughs as SPOCK carries on down the corridor.
KIRK: Come on, let's not waste a good party! (joins MCCOY)
MCCOY: Out of curiosity, what did he say?
KIRK: He thanked me, and when I questioned him, he said that perhaps he'd chosen to embrace his humanity!
BOTH laugh
MCCOY: And then he goes and does that! That's Spock all over! (laughs)
KIRK: You know, Bones, it'd surprise me if he didn't embrace it one day.
MCCOY: (scoffs) A lot of things he'll do will surprise me! And embracing illogic and emotion'll be one of 'em! (picks up a glass of alcohol) Here's to our resident living computer; logical and emotional! (lifts glass up)