Even mom? A rare sight? Did you forget the time when she and Mamoru changed the desktop background to an insect to mess with the dad? Or when she took the rubberband from the kids only to shoot it at the dad when he got home? Or when they were making gyouza and she secretly put wasabi into one of them? Or when she wrote "Blob Sauce" on the mayo? The mom is just as much of a prankster as Mamoru =P