A phat MacBook. For example, one that has been heavily upgraded, or has been modified in some visual or non-visual way.
First guy: "Dude, that guy's Mac is a total PHATBOOK!"
Second guy: "Nah, he just put an orange swirly hardcover on it."
First guy: "But orange swirl hardcovers are phat!"
Second guy: *sighs*
by The.Boone February 22, 2010

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