Cheesed off means that you're really angry, annoyed and unhappy. A cock up is basically a mistake, he made a massive cock up, so it's a big mistake. Cockney rhyming slang has no relationship to the more sexually explicit version of the word 'cock'
Part 1 in a series about informal British English words and expressions. Slang basically means informal language which is used among friends, and which isn't really appropriate at work or in other formal situations. This podcast is devoted to teaching you some of the most common and well-known bits of British slang. Click below for more information and to read a vocabulary list for this episode
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