whittle the whalebone

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whittle the whalebone (third-person singular simple present whittles the whalebone, present participle whittling the whalebone, simple past and past participle whittled the whalebone)

1. (vulgar, slang, of a male) To masturbate.
   • 2010, Kristen Schaal, Rich Blomquist, The Sexy Book of Sexy Sex, Chronicle Books, →ISBN, page 64:

     Both “whittling the whalebone” and “polishing the pearl” are so ingrained in our DNA that infants have been known to handle their business long before it's open for business.

• See also Thesaurus:masturbate.