They call me a freak cause I like to spit on these pussies 'fore I eat 'em
An example of taking something literal and turning it into something notably metaphorical:
Eminem is considered a freak (someone who does a lot of kinky shit during sex) because he likes to “spit on” vaginas before he eats them out. (If you want the literal meaning, I’m sure there are a bunch of porn sites who can help you understand.) But the other meaning is that he is a twisted MC that raps (“spits”) about weaker rappers until he completely dominates them. Spitting can be used as another term for rapping, but actually spitting on someone is one of the most disrespectful things you can do. Either way the point Em is making is that he just emasculates other rappers until he completely takes them out.
Notice the pussy-eating pun in honor of Lil Wayne, the Great Pussy-Eater of All Rap (so it might be another subliminal shot at Wayne in this song, as suggests the conspiracy theorists)
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