Taking the biscuit

British Slang

Definition

To surpass all others in a negative or exasperating way; the most outrageous, brazen, or ridiculous.

Examples

"Of all the excuses I’ve heard, claiming the dog sent the email is really taking the biscuit."

"Charging a “convenience fee” to print my own tickets is taking the biscuit."

"Turning up two hours late without an apology is taking the biscuit."