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A phrase that anorexics use when they're too proud to eat. It means perfect bodies don't need food. It's basically a middle finger to pizza.
I'm skipping dinner. P. D. I. F. I'm a god among humans.
My friend said P. D. I. F. and ate a salad. That's not a win.
He texted me P. D. I. F. and then ordered a pizza. Classic.