Inch of piss

Usually refers to the extra bit of piss that embarrassingly emerges, even after a vigorous shake.
9 times out of 10 this is after you've re-holstered the middle wicket resulting in an embarassing wet patch on the front of your trousers.

Rob: "HAHA! What the fuck is that wet patch on the front of yer jeans?? you incontinent fuckwit!"

Steve: "Oh fuck! That bastard Inch of piss again, i shook the old lad for well over a minute too."