Lyric discussion by WhoWeAre 

Cover art for Mouth of Ghosts lyrics by Dillinger Escape Plan, The

The title Mouth of Ghosts makes me think someone's been running their mouth

"You were a mouth without a heart" talking shit without thinking about who you're hurting.

Everything else pointsto being cheated on; "trust runs out" "nothing to resolve" "never imagined you'd turn into this" "an action without meaning" ... You get the point :)