make a dog's breakfast (of something)

To make a mess of or completely ruin something. I thought I could trust Jim to finish the business proposal, but he made a dog's breakfast of the whole thing.

Common Names:

Name	Pronounced	Usage
Na'ima	-	Arabic
Germaine	[dʒe'mein]
Ambrose	AM-broz	English
Lina (3)	-	Indian, Hindi
Lina (1)	-	Arabic
Bente	BEN-te (Danish, Norwegian), BEN-tə (Dutch)	Danish, Norwegian, Dutch