An acronym for the words Some Days Ago I Asked You. An SDAIAY video on YouTube is follow up to a question or request a YouTuber had made to his viewers.
YouTuber: "Welcome to this shocking episode of SDAIAY..."
YouTuber: "I am a pro at slapping the bass, I can pretty much play anything with SLAPP. Last video I asked you two send me epic SLAPP bass solos you think I cannot play"
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