Mom, I love you but this trailer's got to go
His father abandoned the family when he was 18 months old, and he was raised solely by his mother in poverty. “Trailer” is a metaphor for poverty and he wants to escape it.
Even though he did live in trailer parks from time to time, Eminem is not a trailer park kid. In the movie too, Jimmy only moved in with his mom because his girlfriend broke up with him and he didnt have a place to stay.
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