The Chicago Police account asked followers on Wednesday whether they would be celebrating with a deep dish or a thin crust.
"Either choice beats New York-style slices," they said.
The NYPD hit back, saying, "We recognize the pizza on the right, but what's the one on the left? Is there pasta in it?"
The pizza rivalry between New York and Chicago erupted again this week thanks to their respective police departments.
The fracas was started when the Chicago Police Department Twitter account asked followers on Wednesday how they would be celebrating National Pizza Day, which is on Saturday.
"Saturday is #NationalPizzaDay. How will you celebrate, Chicago? Deep dish, or ol’ fashioned thin crust? Either choice beats New York-style slices. Like/RT if you agree," the post read, alongside pictures of both a deep dish and a thin crust pizza.
—NYPD NEWS (@NYPDnews) February 6, 2019The NYPD Twitter account replied just a few hours later.
"We recognize the slice of pizza on the right, but what’s the one on the left? Is there pasta in it?" the account asked.
—NYPD NEWS (@NYPDnews) February 6, 2019The two cities are known for their very different styles of pizza. The New York-style pizza is a large, hand-tossed pie, with a relatively thick crust, that's often sold by the slice. Meanwhile, Chicago is the birthplace of the deep-dish pizza that is baked in a pie tin and filled with sauce and cheese, closer in relation to a meat pie than an Italian pizza.
Read more: Why Chicago deep dish pizza is better than New York's version
Loyalists of both kids of pizza chimed in on Twitter.
"It's a crime against pizza! Arrest it!" one user named Scott said of the deep dish.
"I thought you New Yorkers were tough? You scared of a bigger pizza pie? Fohgettaboutit. It's got more cheese, more sauce, and more toppings. Maybe you guys can't handle it? Better stick to your kiddie pies," a deep dish loyalist said.
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