Letterbomb by Green Day is a song that deals with themes of disillusionment, anger, and motivation. It serves as a wake-up call, urging listeners to confront their personal and societal problems head-on. The song discusses feelings of frustration and disappointment with the state of the world and personal circumstances. Notable moments include references to wasted youth and the urgency to act instead of sitting idly by. The lyrics convey a sense of urgency and encourage empowerment, pushing the audience to overcome obstacles and take decisive action.