Hell, I meant Kahlúa, screw it, to hell with it I went through hell with accelerants and blew up My-my-myself again, Volkswagen, tailspin Bucket matches my pale skin, mayo and Went from Hellmann's and being rail thin, Filet-o-Fish Scribbles Jam, Rap Olympics '97 Freaknik How can I be down? Me and Bizarre in Florida Proof's room slept on floor of the, motel then Dr. Dre said, "Hell yeah" And I got his stamp like a postcard, word to Mel-Man And I know they're gonna hate but I don't care, I Barely could wait to hit them with the snare and the bass Square in the face, this fuckin' world better prepare to get laced Because they're gonna taste my Venom
(I got that) Adrenaline momentum (venom) Not knowing when I'm Ever gonna slow up and I'm Ready to snap any moment-um Thinking it's time to go get 'em They ain't gonna know what hit 'em (When they get bit with the)
Source: Eminem, venom
What does "get laced" mean? Well, that entire thing is stream of consciousness "scat" poetry, about as far from formal writing as we can get. However, I think it's related to fighting, deriving from having one's boxing gloves laced up before a fight, part of the process of preparing for a professional boxing match.