That's correct, Mod is short for modify. I had to ask the same question the day that MOD pizza opened in Olathe. I was told you can MOD your pizza how ever you like.
Modify. As in modify your own pizza to your liking.
MOD: Video game modification in changing the code. In the case of the food you modify the pizza you want.
Made on Demand.
Modify your pizza.
Thanks! Your answer is awaiting moderation.