biscuit
have had the biscuit be no longer good for anything; be done for. Canadian informal
1994Equinox I thought I'd had the biscuit. I was more than 12 kilometres from camp, I didn't have a coat…and it was about 40 below.
take the biscuit (or cake) be the most remarkable. informal
1925P. G. Wodehouse Letter Of all the poisonous, foul, ghastly places, Cannes takes the biscuit with absurd ease.