dwatt

A teacher with a first name starting with D and the surname of Watt.
Usually a computing science teacher who is rather large and is an interesting character.
Also could be referred to as “Dr. Watt”

John Tinney - “Hey Dr. Watt! What’s my diagnosis?”
Dwatt - “I don’t know John, I am not a doctor”
John Tinney - “But you’re dwatt! Tell me!”