Lyric discussion by jpecimage 

Cover art for Backyard Skulls lyrics by Frightened Rabbit

He said in a small live performance that this song is based on a book and is about infidelity, which would make sense, the backyards skulls are the secrets they hold between each other. Great tune, too

The lines about "suburban adultery" and "smiling at the hypocrisy" make sense in this context. I also really like the double meaning in "no exes mark this spot"