Plenty of slang used in the 'Posh Nosh Under The Cosh' headline on the Daily Mirror's story that inmates at a prison in Cardiff, which recently opened a posh diner to the public called The Clink Cymru, complained that they're not getting enough to eat.

Posh is a word we use to describe people who are (or behave as if they are) well-off.

Nosh is slang for food.

Under the cosh means under pressure.

Clink is another word for prison.