Stink Trench

A smelly vagina, often projecting the aroma of stale crab paste or the contents of a fly ridden dustbin. A term coined in the 19th century but exemplified by pineapple headed chavs who appear on the Jeremy Kyle show.

Marcus: Where's Shaz tonight?

Gareth: Standing on her head in the shower I hope. I ain't going down on that tart till she's toned down the stink trench.