"About a good... oh, ten minutes," he murmured, bending to look over the Doctor's shoulder. "Bit long to be working on a loose wire for you, isn't it?"

He leaned in closer. "You know the last time I was in your TARDIS, I could hear a slight dissonance in your rotor hum. Perhaps that's it? I wouldn't mind being an extra set of hands..."

He had to keep himself from grinning. Oh, this was far too fun.