Putz

google

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1960s: Yiddish, literally ‘penis’.

wiktionary

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Borrowed from Yiddish פּאָץ‎ (pots, “penis, fool”). Compare similar semantic developments in futz.

Borrowed from Pennsylvania German Putz; compare German Putz(“ornament, decoration, finery”), putzen(“to clean; decorate”). Compare the above.

etymonline

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putz (n.)

"obnoxious man, fool," by 1964, from Yiddish, from German putz, literally "finery, adornment," obviously used here in an ironic sense. Attested in writing earlier in slang sense of "penis" (1934, in "Tropic of Cancer"). A non-ironic sense is in putz "Nativity display around a Christmas tree" (1873), from Pennsylvania Dutch (German), which retains the old German sense.