Most Hated Pizza Topping? See What This Girl Despises

Fact: People are very passionate about pizza toppings. Family arguments are based solely on whether there will be pepperoni or sausage or both on a pizza. No mushrooms? Maybe there should be extra anchovies? Maybe none?

This person on reddit is particularly passionate about not having this particular topping on her pizza. Do you share the sentiment? 

What is the topping that causes arguments with your family?