The lyrics could be Kurt thinking he's a lazy, weak figurehead who is depressed and sad and wants a new life. Some lyric analysis:
"I'm on my time with everyone" - He was usually late for interviews.
"I have very bad posture" - Childhood Scoliosis made him appear hunched over.
"Sit and drink pennyroyal tea" - This could be a drug he took to calm his stomach pains, but it is also a play on words with penny royalty, meaning a cheap figure head.
"Distill the life that's inside of me" - He wants to cleanse his life and start fresh.
Lucy - Ottawa, Canada