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Miriam Margolyes, known best for her role as Professor Sprout in the Harry Potter series , sat down to promote her new book, The Little Book of Miriam

During the segment, the 84-year-old ate onions and chips, leftover from a previous segment of the show

Morgolyes encouraged viewers to do "poo tests" for the health benefit of knowing what's going on in your body

Miriam Margolyes refuses to be anyone but herself, even when she’s on live television.

During a Thursday, Sept. 4 interview with This Morning , while promoting her new book, The Little Book of Miriam , the Harry Potter star, 84, talked about health examinations involving her feces, a famous actor farting on her, along with other outlandish topics, all while chowing down on chips and a raw onion.

Ben S

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