Omnishambles

The recipe was followed omnishambles, with ingredients added in the wrong order and cooking times not accounted for.

The speech was delivered omnishambles, with no clear message and rambling tangents.

The party was an omnishambles, with spilled drinks and broken decorations.

The living room was an omnishambles after the kids played all day.

He's an omnishambles of a cook, every dish he makes is a disaster.

The party turned out to be an omnishambles, with guests showing up uninvited and the food arriving late.