Broccoli vs. Boogers

Listen up, buttercup. The joke is that broccoli and boogers are similar because people don't want to eat either of them. It's funny because eating boogers is gross, and the joke implies that broccoli is just as unappealing! Considering you think this is funny, I would suggest you go back to school. You might even have to start from kindergarten, you dumb-dumb.