He's right. Damn it all, Strange knows that the changeling is right. What could he do? If he hurt the man in any way, shape or form then congratulations, he's out one servant. Strange didn't know of any friends he had or any family that Childermass actually liked that he could use to punish him with. (It doesn't occur to Strange that Childermass and Lambert at least know each other slightly well, he could do something with that. Probably for the best.)

But at the same time, there's really no way he's going to let that bird get away with this. He just doesn't know how.

Strange storms away back to the kitchen, bright red with embarrassment and anger. He snatches a piece of paper off the fridge and offers it to Childermass. Before he can say what it is, though, Strange just falls into a coughing fit because oh yeah, things like that happen when you're an idiot who poisons themselves.

The piece of paper in question is the most anal-retentive and needlessly descriptive grocery list in the history of creation.