Tiger in my Tank by Eels is an exploration of inner strength and resilience. The song metaphorically refers to having a 'tiger in my tank,' suggesting a sense of power and determination that drives the narrator forward, regardless of the challenges they face. Key themes include perseverance, self-discovery, and embracing one's inner strength. A poignant moment in the song is when the narrator acknowledges the hardships but remains steadfast, highlighting the importance of staying strong and finding motivation within oneself.