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
Florentine	-	French
Perez	-	Biblical
Vibol	-	Khmer
Lucretia	[lu:'kri:ʃjə]
Albina	ahl-BEE-nah (Russian, Italian, Polish)	Russian, Ukrainian, Italian, Portuguese, Spanish, Slovene, Polish, German, Lithuanian, Ancient Roman
Mohammad	-	Persian, Arabic, Urdu, Punjabi, Pashto, Bengali