[Oh. Well. That does make a lot more sense than Spring coming from the future, Vimes supposes, but the resemblance between the two had been uncanny.]

Two years, eh? Congratulations, for what it's worth.

And that isn't exactly what I'd call a lie, there. A lie's when you know you're not telling the truth and do it anyway. I'd call that bit a misunderstanding. Besides, the two of you look enough alike for anyone to make that mistake.