Phobos laughed a little at the face his brother made and laughed a little harder at the name he used. It was either that or get mad and right now he didn't feel like getting angry at anyone. It'd take up too much energy.
"It's alright, brother. I miss him, too." He ruffled Deimos' hair. "Hey, at least, we know he's around and where he lives. The next time dad takes off, we should redecorate his place for him."