Lyric discussion by TerrapinAtHart 

Cover art for Backyard Skulls lyrics by Frightened Rabbit

To me, the song is about hiding things about yourself that others might find embarrassing.. Backyard skulls = skeletons in the closet. The message of the song is that our SO will discover our "backyard skulls" that are "not deep enough to never be found", so we might as well admit to our own imperfections and let them decide where to go from there.

My Interpretation