Pimp you may move a mouse, but what's a rat to a cat store
A rat in a cat store signifies that the rat is a toy for cats to play with
Playing off the previous lines about hackers, Anonymous, and Zuckerberg, to which Lupe compares himself. Lupe is this underdog powerhouse rapper much like the hackers are to the internet (i.e. the ultimate hacker, Zuckerburg). Even if you’re good with a “mouse” (rappers might have bars) you’re still a rat/mouse and he’s a cat — i.e. you’re still his prey.
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