Idiom "sweat bullets"-----influence of German?

[David Bergdahl]

One other possibility is a discomfort with the mention of "blood" leading to
a euphemism beginning w/the same letter, on the model of the substitution of
C-words for "Christ" in Crap! or Cripes! (whick share the initial /kr/) or
SH-words for "shit"--shucks! or sugar!

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