Do Da Da by Green Day is a punk rock song that delves into themes of disillusionment, confusion, and the feeling of being stuck in a mundane or unfulfilling routine. The lyrics portray a sense of frustration with the repetitive and seemingly meaningless aspects of daily life. A particularly poignant moment in the song arises when the repetition of the phrase 'do da da' mimics the monotonous cycles people often find themselves in, evoking a sense of being trapped in an endless loop.