sacana

Of unknown origin. First attested in the 18th century. Several fanciful etymologies have been proposed, including: * It may be from Japanese 魚 (sakana, “fish served with alcoholic beverages”). According to this theory, the origin of the word goes back to the 16th century, after the Portuguese arrival in Japan. Because of the laborious task of removing scales and fish bones for the preparation of this dish, the term became a vulgar metaphor for masturbation. Thence the meaning would have been ext