"Second floor it is then," he answered, picking up the portable swamp. This was going to be loads of fun, that was for sure, but they had to be careful. It was unfortunate that they had never received Invisibility Cloaks, or hadn't borrowed Harry's. Nor that they could Apparate in the Castle. Rules! They were meant to be broken, in Fred's opinion.
"Shall we?" he asked, mock bowing and extending his arm for George to lead the way.