Basically just water in one hand and a huge invoice in the other

That Mitchell and Webb Look: Homeopathic A&E

"OK, so you killed the odd patient with cancer or heart disease, or bronchitis, flu, chicken pox, or measles. But when someone comes in with a vague sense of unease or a touch of the nerves or just more money than sense, you get a bottle of basically just water in one hand and a huge invoice in the other."

https://www.youtube.com/watch?v=HMGIbOGu8q0