He's so stagnant, he knows
When he goes back to this mobile home,

from Eminem – Lose Yourself Lyrics on Rap Genius

Meaning

He’s aware of all his drawbacks, one of them being his inability to move out of his mobile home (a metaphorical contradiction).
Notice the word usage of stagnant (i.e. stationary due to his financial struggle) and “mobile” (which signifies movement).

http://www.youtube.com/watch?v=WbdfH8XXq9I

…And just to clarify, Eminem really did live in a trailer as a kid.

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