dicklength
An imaginary unit of measurement used in conversation to exaggerate the length of one's member.
Son: "Dad, how long is a basketball court?"
Father: "I don't know the exact figure, son, but I'd say it's probably somewhere between 12 and 14 dicklengths."
Father: "I don't know the exact figure, son, but I'd say it's probably somewhere between 12 and 14 dicklengths."