"Shut up, Sirius Black!" Allen had to raise his voice to cow the two of them again. Then he stood, shoved the window open, and suddenly called out, "Flobberworms, come! Flobberworms, come!"
Two brown, wormlike creatures, roughly ten inches long—about the diameter of a dinner plate—and thick and round in body, flew in from the damp ditch beside the castle wall below and landed on the Headmaster's desk. They had never been fond of moving in the first place, and after experiencing the first flight of their worm lives, they dared move even less, quietly playing dead. But immediately afterward, Allen used the Multi-Soul Curse—an Unforgivable Curse if used on a person—to take control of their bodies. These things, whose two ends differed little and both secreted mucus, suddenly sprang up, their bodies tangling with the other caterpillar. The worms, which normally liked eating lettuce leaves, began biting into the other one's head.
"Allen, what are you..." Sirius Black's dark gray eyes looked at the two Flobberworms in disgust, his tone bewildered. "Making us watch you play with worms?"
Professor Snape raised an eyebrow and looked at the one dead and one living Flobberworm, his black eyes gleaming dangerously on his face as he could not help guessing inwardly: He stopped me and that stupid dog just to watch this... Is this some kind of insult? Does he think that, facing him, we're like these two Flobberworms?
At that moment, the Flobberworm whose head was being gnawed on soon stopped struggling and silently stiffened. Allen directly pulled Sirius Black onto a chair. "Sit still and don't move!"
Then, without speaking, Allen gave his explanation through action. He made a few gestures at the remaining worm, and under Sirius Black's astonished gaze, something so faint it was almost impossible to see