Cock Tan (verb): The spectacular display of frustration and diplomatic clumsiness that occurs when someone not only attempts to acquire a company but manages to offend an entire nation in the process. It's like throwing a tantrum in a china shop, only the stakes are higher, and the broken pieces include international relationships.
We had a great merger deal lined up, but Bob totally cock tanned it by accidentally sending a crate of rubber chickens to the Chinese boardroom.