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
Nitza	-	Hebrew
Dickey	['diki]
Bethari	be-TAH-ree	Indonesian, Javanese
Bales	[beilz]
Zal	-	Persian Mythology
Suellen	soo-EL-ən	English