Is the slang speaker an invertebrate? There are few bones in slang

Names of bones seem to be used rarely in French slang, contrary to other parts of the body. Four French sources (two slang dictionaries and two academic studies of slang) were examined and the words denoting body parts extracted, confirming that names of bones are indeed hardly ever mentioned. It turns out that the inner body parts in general, and not just bones, are rarely used for slang, unless they have some visible external manifestation. Those bone names that are found in slang are sometimes scientific words, presumably used for expressive purposes.

Keywords: semantics; theta roles; metalexicography; body-part name; slang