Think of the words ONLY as words.
Don’t visualize what the lyrics say, don’t take what they say literally. The function of the profanity is to make the lyrics rhyme, to explore creative combination of words, or to create something funny (if sarcastically).
Think about those instances when you swear, when you spit “Sh*t” or “Fu*k”, do you really see animal excrement or sex organ in your head? No you don’t, it’s just one of the many ways to let out the negative feelings inside.
Treat Eminem’s lyrics the same way, and you begin to appreciate the creative display in the music. Burden off, guilty free.
(This post is dedicated to those who appreciate creativity yet feel rap music offensive generally)