Charlie had chosen to wear his old school uniform. He had it packed away in a bag he had with him when he arrived on the TARDIS, so it wasn't so hard unpacking it and neatening the whole thing out before putting it on. He knew where they were going and knew that having a uniform might be a good idea. He had a few spares, seeing as he was packed to go home. And that's where Damien came in.
Charlie grinned at his friend. "Not just yet" he said. He leaned over to grab something. As he did so, the image in the portal flickered away leaving a silvery coloured pane of energy, shimmering and shifting.
"I've got something for you" he said, picking up his bag, before holding it out and placing it in the others open hand. "Well, if we're going back to my old school, you might need this or you'll get thrown off campus" Not to mention he'd also get punished for it. An idea he did not savour. He had been punished before.