"Well. Yes," Niki decided to allow this as a truth. Goyle had always been taller than him. And likely always would be, unless some spell went awry to shrink Goyle, or stretch him. And that was fairly unlikely.
"He's not dead," he agreed, and he reached out and patted Theodore's head. Almost in a fond manner - and rather like the way someone would pat a puppy or a kitten. "You're not dead," he added, for good measure, wondering why Theo was so insistant on that particular point of non-living.
Because he was awfully spry for a dead guy.
"A drink would be good. I could use one. A drink," he wasn't sure the offer was meant for him too, or just Theodore alone, but he took it!