Peter at the university

An hour later, Walter's professor colleagues were standing in the kitchenette. Then suddenly the door opened and Peter entered the room.

"Hey, are you a student?" asked Christian as Peter walked to the time clock terminal and checked in at it with Walter's employee ID.

"I know you! You're Peter, Walter's son! Is your dad running late today?" came from Olaf, the older colleague in the room.

That's when the boy turned around, opened his mouth and said....