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
Sindy	SIN-dee	English (Rare)
Fernanda	[fɜ:'nændə]
Hannah	HAN-ə (English), HAH-nah (German)	English, Hebrew, French, German, Dutch, Swedish, Biblical
Abimael	-	Biblical
Comgall	-	Irish
Mikel	-	Basque