drop a bollock

vulgar slang To mess something up; to make a particularly egregious error. Primarily heard in UK. That new intern is totally useless, he's always dropping a bollock on important projects. That player really dropped a bollock during the match yesterday.

Common Names:

Name	Pronounced	Usage
Bartley	['ba:tli]
Leonie	LE-o-nee (German), lay-o-NEE (Dutch)	German, Dutch
Balch	[bɔ:ltʃ]
Nickolaus	NI-ko-lows	German
SÌNe	SHEE-na	Scottish
Dale	[deil]