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
Telesphorus	-	Ancient Greek (Latinized)
Qamar	-	Arabic
Ghenadie	-	Romanian
Atherden	['æθədən]
Eha	-	Estonian
Rick	[rik]