Whilst doing a bit of research, I came across an article regarding “pizza code words” from 2015 (pre pizza gate)

Here’s a quote: “Having a handful of code words and cherished symbols you use among your fellow comrades is something that’s not for the customers, or even the owners,” says Brian Dwyer, who heads marketing for the Pizza Brain pizza museum. “It’s for the people in the shit, doing it every damn night.”

Please read the whole article! The “code words” do not make any sense unless you apply it to sex trafficking!

https://firstwefeast.com/eat/2015/10/pizza-slang-101