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
Kosta	-	Bulgarian
&Aelig;&Eth;Elfl&Aelig;D	-	Anglo-Saxon
TeÓDulo	te-O-dhoo-lo	Spanish
Romanus	-	Late Roman
Daiva	-	Lithuanian
Rosaria	ro-ZAH-ryah	Italian