One of my older brother's best friends back in high school would tell jokes that made absolutely no sense. When the joke-recipient didn't laugh, he would always say, "Ha! It went over your head and below your feet," in a singsong voice. He would recover from saying something that wasn't funny by saying something else that wasn't funny, about how the other person didn't know what was funny. I'm sad to admit that I actually find the compound-irony of that kinda funny.
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