Omnishambles

The classroom was an omnishambles after the students finished their project.

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

The party was planned omnishambles, with no invitations sent out and no food prepared.

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

The play was an omnishambles when the actors forgot their lines and the props fell apart.

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