Honeymoon planet

A honeymoon planet was a sentient planet on a honeymoon.

Before the Shansheeth lured the Eleventh Doctor into the Crimson Heart, he dropped Amy Pond and Rory Williams off on a honeymooning planet. The Doctor mentioned that it wasn't a planet for a honeymoon, but a planet on a honeymoon which had married an asteroid. (TV: Death of the Doctor)