"First of all, you try and remember everything with a human mind, its impossible! And secondly, where are you going?"

So maybe he liked to tease and annoy this doctor, didn't mean he wanted to be left behind with nothing to do. That had happened once today and he'd missed out on all the fun. Hurrying after the Doctor, he glared at the back of the Time Lords head, trying to somehow do him damage with his mind.

"It might, actually, I only have so much time, being mortal and all. I don't have time to waste yet you insist upon wasting it. Sometimes I think you're just waiting me out till death."