Take The Biscuit Edit Meaning

1.

To be the epitomeof something, typically something unpleasant. To stand as the best (or more likely worst) example of a series of things.

Of all the slimy schemes Jim's pulled over the years, his attempt to pay a psychologist to testify in court that Marie, whom Jim had actually repeatedly raped the previous year, was merely paranoid, just has to take the biscuit.

See epitome, extreme, worst, last straw, whopper