You head back towards your dorm, you need to come up with something else. You are all so deep in thought that you don't notice the whole 7th floor hallway was flooded until you stepped in the water yourselves. Yuck. Toilet water!
After a quick glance at your friends you cautiously move towards the bathroom that has caused this. 'At least it's not the Myrtle's one' Hermione whispered.
You quickly noticed what must have caused the toilet to clog, an old leather book has been shoved there with the flush still turned on.