It may seem strange, but it all started from the anthropology lesson.
"Our topic is blood circulation," said the teacher.
Petros chuckled.
"Are there odd numbers in this circulation, sir?"
"Is there also a traffic code?" Yiannis joked.
"Disruption of proper blood circulation can have serious consequences," said the teacher seriously.
"Sir," interrupted Vaso, whose mind is as sharp as a razor, "let us learn how to circulate correctly and teach traffic rules to the other children in our school."
It all started from the small and large circulation of blood, and that's how we got into... blood, us students!!!