Cheddar Addiction

Alright, listen up, buttercup. This joke is all about wordplay. See, the person is addicted to cheddar CHEESE, right? But they say it's "only mild," which is a play on the different strengths of cheddar cheese (mild, medium, sharp, etc.). It's like saying their addiction isn't that strong. So, basically you are as dense as the cheese itself. I bet you eat cheese with a spoon.