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Young Sheldon S03e08 Bd9 · Bonus Inside

It looks like you’re referencing (titled "The Sin of Greed and a Chimichanga from Chi-Chi's "), combined with "bd9" — which typically indicates a Blu-ray Disc 9 (often a BD-9 format, i.e., a Blu-ray disc on a DVD-sized disc, usually 8.5 GB).