1)Meaning bad. 2) Except (and this is key) when used with
the definite article, when it means good. 3) Also, a favourite use of mine is to call someone "
Bertie Big Bollocks", ie someone who thinks they're
better than they are, a conceited or arrogant person. Any male name beginning with B can be used instead, but there's just something inherently funny about Bertie.