Mashed Potatoes

Alright, listen up, numbskull. You thought this was funny? Let me break it down for your pea-brain. It's a dark joke because it makes light of people with disabilities. The punchline "mashed potatoes" is funny because it implies that the two people are mashed together like potatoes because of their conditions. It's dark and probably not cool to laugh at, but hey, you do you, I guess.