A suitable replacement for his ex-wife, also named Kim.
I’d like to suggest that maybe some people outside Drake’s and Justin’s fanbase hop in on this one. It needs some work, but isn’t beyond redemption at all. We just need some people to take a look at the way the two work together, the (admittedly minor) changes they’ve made to their respective styles and lyrics for the track, and the ways in which they work well together.
He’s changing Drake’s original meaning around to avoid a drug reference. Although he says the same line, it can be assumed that he means that he’s stubbornly clinging to an issue or behaving unusually.
A direct reference to an old Lil Wayne line, from “I’m Blooded,” off of Da Drought 3. Drake may have a different, more sensitive approach to its meaning, but Wayne meant that he’s usually the one pursuing women for sex, and now they pursue him in the same way.
Another interpretation of this line is his lack of faith in his ex (and possibly the listener’s interpretive ability). Earl may have begun explaining, then figured it wouldn’t have amounted to anything and stopped midway through. This, in turn, reflects the frustration he would have felt as an obviously gifted kid whose abilities were under-appreciated.
Almost as much as he loves his spinach.

Fax machines use 500-sheet reams of paper, on which to print things. Wayne’s money comes in stacks of a similar size.

And red sauce, too.
And, naturally, the pain Fab plans to inflict would be “major,” so there’s a nice little homophone there too.
“No bladder” indicates in the context of this lyric that there are no excretory organs present in the situation at all. It’s a stretch, but basically does a good job of demonstrating Earl’s contrarian nature.