Radius and Diameter

Do not read this if you want it to end well; do not read this if you even want to understand how this conversation happened because I know neither.

Homework is often done at the dining room table; all four children sitting there working on their own assignments, but every once in awhile someone will ask someone else for some help. The other night only the babies (yes even at 13 and 14 we still call them the babies) were in the room and this is what I hear.

William, "I have a hard time remembering the difference between radius and diameter."

Caroline, "Radius is the measurement from outside to your nipple; diameter is all the way across with your nipple in the middle."

Something tells me William will never confuse those terms again.