Last Chicken in the Shop

Used to describe the unsightly dangly assortment of genital objects when a bloke pulls down his pants in a public place. So called because it's always the most mangy looking chicken that is the last one sold in the supermarket

"oh shit, Ben must have had a few beers, he's getting out the last chicken in the shop again"

"yeah mate - but it's more a poussin than a chicken"