Lyric discussion by josefineumuser 

Cover art for With Aplomb lyrics by Biffy Clyro

As far as I have understood the song is about a relationship that comes back to life. These are the parts I understand fully;

"Kill your bizarre mindset, fuckhead, soldered to a three-layered concrete brainwave castration" MEANING; Stop being so bizarre, kill off your way of thinking like a brainwave castration or against a three layered concrete wall.

Walking backwards home with you MEANING; Starting all over again.

My Interpretation