But I done did enough codeine to knock Future into tomorrow
He teases new-school rapper Future, because he always “raps” about how he drinks codeine . Also, a play on words with Future’s name. The future is tomorrow (and also contrasts the past in the previous line). So he’s going to knock Future into tomorrow. He may have tried to avoid the harder stuff in his past, but he went through recreational drugs like lean like they were nothing.
In Eminem’s autobiography, The Way I Am, he almost died from taking too many Tylenol 3’s (Codeine) when he was depressed after placing second in the Rap Olympix. This was the night before The Bass Brothers got a call from Dre. Everybody dies, it’s everyone’s future, and Eminem’s future very nearly came right before he blew the fuck up. Since this album is him paying homage to the past and reflecting on where’s he been and where he’s at, I wouldn’t be surprised if that night crossed his mind when he penned the line.
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