The multiple input method (multiple Chinese characters and graphic symbols input method) can quickly find the word "Shi" on page 1184 of the 6th edition of "Modern Chinese Dictionary":
Shi shǐ
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[Name]
The excrement coming out of the anus; feces: diarrhea~. ?
Things secreted from the eyes, ears and other organs: eyes~│ears~.
There is no last name to say. If anything, it is indeed the most embarrassing last name.