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
Lidija	-	Slovene, Croatian, Serbian, Macedonian
Paniz	-	Persian
Yong	yong (Korean)	Chinese, Korean
Kreskes	-	Biblical Greek
Sawney	-	Scottish
Fannie	['fæni]