This may be the best line ever delivered by a customer to a supplier:
We are all in the big conference room. The heavies from the plant were present — plant manager, department heads, production control, and little insignificant me. Mr. VP ranted and cursed. The team from our side told how we have striven to fix the various problems in procurement, production, and quality. We described our heroic efforts in spite of nearly insurmountable issues to get the big customer his product.
“I get it,” he said. “You guys are great firefighters. The only problem is it looks like every single damn employee here is a fucking arsonist.”
It was harsh, but apparently it broke the ice.
Certainly none of our customers ever came up with anything quite that pointed, but then we’re in an industry that would pat itself on its back for its passive-aggressiveness if it could do so without disturbing the knife repository.