They said I was washed up, and got a blood bath
To be considered ‘washed up’ denotes a sense of irrelevance and insignificance; Eminem transforms this phrase by adding his own clever twist to it; the critics basically claimed he is washed up so, he proved them wrong by taking a blood bath, thereof he’s no longer ‘washed’ since blood isn’t a pure liquid to cleanse oneself with ! He adjusted and adapted to the flaws they labeled him with.
The wordplay on blood bath can be also referencing the horrorcore content on Relapse, where several celebrities were slaughtered in Slim’s dark anecdotes.
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