There are certain foods you eat on 4/20, and then there are certain other foods you simply forget to eat on 4/20, because you also forget to leave your house and do things, like purchase and subsequently consume food.
But no more! All you need to do is consult this handy 4/20 snacks ranking, which provides important and detailed information on which snacks are "good" and which other snacks are "better than that." Then, after you forget what you just read, read it again. Repeat this until you are actually eating something.