Weasel piss
I've never heard that term before Bob, and I have to say I like it. It's got a utilitarian feel to it. Brilliantly descriptive, as you point out, but I reckon it's also good for an exclamation or two. Like "bloody hell", "Frank Boughs knob!" or even "sh*t-the-bed!!". I'm going to use it as much as I can this week.
Mark, you're right mate, it's nostalgia again. - I think, behind the garden shed I have a collection of party 7's, bent can openers and severed fingers. It was great, wasn't it?
H