Brexit = A cultural phenomenon where one seas flags spinning all around them before waking up in a bed at a deserted hospital in the centre of London 28 months later and soon finding that all of the hardnuts are scared of needles and politicians lie.
Walloper, this is used in different ways. 1, to describe someone as an idiot 2, to describe a penis <usually flaccid > I think its used in Australia too.
And even that is frequently abbreviated to Bikkies !!! And there is a lot of cockney back-rhyming slang - f'r instance in referring to someone's face its called a boat race !!!