See: COME BACK TO EARTH.
{v. phr.} To return to the real world; stop imagining or dreaming; think and behave as usual. * /After Jane met the movie star it was hard for her to come back to earth./ * /Bill was sitting and daydreaming so his mother told him to come down to earth and to do his homework./ Compare: COME TO ONE'S SENSES, DOWN-TO-EARTH. Contrast: IN THE CLOUDS.