065: Calendar
Bones had learned to acknowledge that his best bud, one James Tiberius Kirk, had very unorthodox habits that wouldn't be broken. Yet it was still odd for the blond to be leaning over his planner so intensely, obviously engrossed in something that was scheduled in one of the little box days.
Later, Bones would discover (through good-natured snooping that friends do to each other) that Jim was staring at a scheduled, private appointment with one Lieutenant Spock.
Bones made the connection it was their first date.
When he saw Jim the next time after this discovery, the doctor couldn't help the bout of laughter.