Prompt: write a drabble detailing a trick in any of the Common Rooms
Fred stood up, arms raised. "Listen up, everyone! We're going to make this April Fool's-" He gaped, his mouth moving silently. Clutching his throat, he looked positively murderous as the rest of the Gryffindors crowded around, shouting out questions and advice. But to no avail; Fred was silenced.
Hermione sat alone, her half-written essay forgotten. It had been surprisingly easy to perform the jinx. She had placed it on the common room itself; no one who uttered the words would be able to speak inside the room again, at least until tomorrow. She smiled to herself. Best April Fool's ever.