It must be because pizza's Italian...

[Two women are playing a trivia game while waiting for their pizza.]
Woman 1: [Asking woman 2] Describe, in detail, the American flag.
Woman 2: [Promptly] Red, white and blue. 13 stripes, 51 stars.
Woman 1: [looks confused] That's what I thought, too. But this says there's only 50 stars.
Woman 2: People are just so ignorant these days.
-Pizza Hut