"Hangover" by America delves into the consequences and aftermath of excessive drinking. The lyrics depict the narrator awakening with a pounding headache and feeling physically and emotionally drained. The repetitive knocking on their door indicates a lack of understanding or sympathy from the outside world. The line "There ain't nothin' left to do this morning / 'Cept to make it to my bed" suggests a sense of hopelessness and the need to retreat from the outside world.

The verses describe a night of indulgence, where the narrator engaged in activities without concern for the passing time or the consequences. The focus shifts from the enjoyment of the night to regretting the amount of money spent during this reckless behavior. The mention of starting slow and gradually escalating throughout the night implies a lack of self-control and an inability to recognize the warning signs of excess.

The chorus emphasizes the profound impact of the hangover, rendering the narrator incapacitated and unable to face the day ahead. They express a desire to be left alone, unwilling to confront their current state of being. The lyrics also touch upon the narrator's disillusionment with their own life, questioning how they can navigate the future when they struggle to even lift their head. They describe themselves as a "drunken loser" with an overfed liver, suggesting a cycle of self-destructive behavior.

Overall, "Hangover" portrays the aftermath of excessive drinking, showcasing the physical and emotional toll it can take on an individual. The song captures the feelings of regret, isolation, and introspection that often follow such behavior.