One day, after years of study, a student returned to his small village. His family and friends were proud of the student and all of his accomplishments. They threw a party in his honour. During the meal, the student's father stood up and gave a long, heartfelt speach about his son. After bringing the crowd to tears, he turned to the scholar and begged for words of wisdom.
The student stood up and, before a hushed assembly, stated "Pi R squared", smiled smugly to himself and sat down.
The father approached the boy with hat in hand and beat the student with it.
"Stupid Boy! Cake are square. Pie are round!"
I have yarn pies.
See baby for scale.
Now, what will I knit?