This joke is funny because "post" (a piece of writing published online) is phonetically similar to "post" (a piece of timber set upright in the ground). The knots and cracks in the growth rings of the wooden post in the attached image appear to form a frowny face. #SadPosts https://t.co/cYFTmWItHq
— Explainer of Jokes (@JokesExplainer) Oct 6, 2022