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Doesn't bother me, considering the context, but then I'm known for having a potty mouth. :) As long as your book is pitched to an adult audience, you're fine.
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#4: Attribution notice removed
Source: https://writers.stackexchange.com/a/24731 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/
#3: Attribution notice added
Source: https://writers.stackexchange.com/a/24731 License name: CC BY-SA 3.0 License URL: https://creativecommons.org/licenses/by-sa/3.0/