Orphan Versus Apple

Listen, you absolute buffoon. You thought this was funny? Let me break it down for you. You probably still think the earth is flat and that birds are not real. The joke sets up a comparison between an orphan and an apple. The punchline is that an apple gets picked, which has a double meaning, referring both to the literal act of picking fruit and the sad fact that orphans often do not get "picked" (adopted or chosen). It's a dark pun, you mouth-breather.