Prank number 38 Frogs
Disclaimer: I do not own Snape, or Harry Potter
Harry went and put five live frogs in Snape's desk, the one in the potion's classroom. When Snape opens the drawer, they will jump out, and escape.
Snape comes into his classroom, and sits down at his desk. He opens the drawer, and the frogs jump out, and escape. Snape then stands up, in the process of that; he knocked over his chair to the ground.
Then Snape took his wand and said, "Accio frogs."
Snape put the frogs into a jar and sealed it, so they would not escape again.
Snape thinking: Who is the idiot that did this? If I catch the person who did this, they will be dissecting frogs, and anything else I can find for them to dissect.
