"Ooooh! Oooh! Me! Me!" Peeves waved his hand in excitement from the back of the group. He flew up to the front of the class where the potion was. "Professor Rey is lost today, but Professor Peeeeves is here to stay!" He grinned down at the students as he sang. He faked a deep, professor-like tone of voice. "Now, class, this is potion MOST DANGEROUS! But there's no need to panic -- Peeves will show you JUST what to do!" He dipped a cup into the potion and held it up.

"Ooooh... let's see what this can do!" he admired the green potion and then aimed for a student and threw the liquid straight at them, the liquid streaming through the air and landing, erupting in an enormous splatter of bright light. He cackled, pleased at his handiwork, and began tossing around cupfuls of potion, splashing it about and trying to hit the students. Soon the room was filled with explosive bursts of liquid light so bright it could burn your retinas.