tunalockEtymologyBlend of tuna + Sherlock.nounA subgenre of Sherlock fan fiction and fanart portraying Sherlock Holmes as a tuna or tuna-headed reverse mermaid.“(There is, for example, an enormous genre of fan-made visual art depicting Sherlock Holmes as an anthropomorphic tuna: collectively, Tunalock. It would confuse Sidney Paget, but I find it hilarious and rejoice in its existence.)”