Eminem’s enemy Benzino, rapper and co-owner of the rap magazine The Source, leaked two Eminem tracks that Eminem says were recorded in the late 80’s, when Em was still in his teens. (Benzino claimed at least one of the tapes was made when Eminem was 21.) One song, “Foolish Pride”, contained shots at black girls (Eminem later said it was because he was rejected by a black girl) but no N-bombs. However the other track, a freestyle, does contain the N word. There is also a recording of Em saying it while performing Dr. Dre’s song “The Watcher” live with Dr. Dre in London in either 1999 or 2000. One would assume Dr. Dre gave him permission to use the word; it’s left for each person to judge whether that would be a justification for Em using the word in that context.

He is referring to Chemtrails, which is the theory that chemical or biological agents are being deliberately sprayed via aircraft onto the general public.

A documentary entitled What in the World Are They Spraying? (2010) goes into detail revealing what they believe is a cover-up story of how stakeholders in the geo-engineering industry intend to change the global climate, control the weather, and alter the chemical composition of soil and water – all supposedly for the betterment of mankind.

(This article provides several sources, as well.)

West Brighton Pool is a public pool in Staten Island across from the projects.

Iron duels are rap battles.

Eminem starts breaking the fourth wall a bit here. Kim is his ex-wife, and Marshall is his real name. Slim Shady is another Eminem alias, Dr. Dre supported Em during the early days of his career, and Hailie and Alaina are his daughter and adopted daughter

Basically, this is a list of things that go together. At the time this song was written, they had only divorced once, and he was currently back “in love” with her.

Lupe uses a double entendre with ‘rain’ and ‘dear’, referring to both Dasher the reindeer and tears/rain that fall down his girl’s/dear’s face.