'Boop' is Altean for, "A positive statement of agreement, in which two or more individuals, in exchange of greeting, agree that the day is relatively, but not extremely, pleasant, but only if the third moons are in alignment with the Star of Baps, the day is free of rain, you are upon your right foot at the moment of the encounter, and you have seen at least 12 yuppers in the past 7 quintants."