The further one goes back in historical research the idea that folk have an ‘everyday’ popular sense of humor gets lost. Fun becomes ‘humor’ with ‘cultural significance’.
I like the idea that this is a pestle. The rounding of the but end (snigger) makes this plausible.
Today and back ‘then’ the idea of holding the cock end to pound seed into the mortar kinda strikes me as funny. A wanking joke.
Perhaps this talks to ideas of groundbreaking cultural attitudes around masculinity or alternatively this is the equivalent to a novelty shop item that evokes a snigger… you pound something with it. Perhaps it lost its novelty after a month of use and ended up in the bottom draw with other useless kitchen single use novelties.
Serious research could benefit a contemporary understanding of our modern ‘civilized society’ by understanding how many people in ancient cultures were actually kinda goofy.
Maybe that was the one they gave to the new apprentice, or someone decided to ‘decorate’ their friend’s tool. (No, not that kind of tool you dirty sods!)