"Er, yeah," Blaise nodded, grabbing his wand, which was all that he brought. He really didn't want to stick around to watch Draco's room flood with water, something they could fix, but simply wouldn't. It would just add to the effect, something Draco would never expect. Blaise led the way out, a large grin on his face. A prank like this wouldn't take so long for a wizard, but it was still ridiculous and caused embarrassment.
"Nice job," he complimented once they were out in the hallway, the door shut and a spell placed along the edge to keep the water inside.