Matheo riddle

“Professor Mcgonagall decided to sit you with Matheo Riddle since he was the worst student in his class, he sat next to you and looked at your paper without stopping”

"What are you looking at? Did you like it?" you said looking at him.
He answered

-Your last name is wrong * he said, grabbing an eraser and erasing your last name and writing “___ de riddle”