One Hundred Things You Should Have Done In Bed by Snow Patrol is a contemplative track that delves into themes of regret, lost opportunities, and reflections on past relationships. The song poetically lists numerous experiences and moments that could have been shared between lovers but were ultimately missed, painting a picture of profound yearning and introspection. Key themes include introspection, unfulfilled desires, and emotional complexity. Particularly poignant moments in the song include the enumerations of what could have been, highlighting the deep sense of regret and lamentation. Through its reflective lyrics and emotive delivery, the song encourages listeners to contemplate their own missed opportunities and to cherish moments of connection.