Some people don't eat fish. When asked why, HB asked us if there's a medical term for hysterical fear of fish. Two guessed "Ichthyophobia", and later this was discovered to be true.
Then the discussion went into a direction of possible strange phobias and treatments by exposing one to the subject of his fears. Bungee jumping for acrophobics, etc. Someone said it should be done gradually - "First, you are given something small, like a piece of tuna. Later in the course, you advance to a bigger salmon, and so on" P:"and on the final test, you are eaten by a big shark!"
On another occasion, it was a design meeting. "Is this thing a tree?" someone asked. "No, it's a DAG". "What's dag?" Someone: "A directed Acyclic Graph". AL: "In hebrew it's called 'fish' "
(Then it was developed further, 'okay, where does this DAG piss from', 'where is the fish burried', etc)