phat is a play on the word
fat. however, given the etymology of the word, we see a broader (phatter) meaning of the word. the ph is derived from the pH scale, which, contrary to dumbass belief, goes from
0 to
14. Now, since 0 comes first, it's where you start--it's the bottom. So, it goes in the denominator. Thus, you have (
14/0)= ∞. Infinity represents how phat the ass is--infinity
big. Also, the ass looks like a ∞ sign. Need i say more?