just bin reading another hread. there was 'go piss up a rope!' - a us expression.

does it mean there's a rope dangling down & you go & wee up it?

or do you climb up a rope & wee down it?

if you're a chap, you could probably manage the first option ok, but a girly would need to take care!

in the second example, you could break your neck trying to undo your fly & trying to hold onto the rope at the sametime, if you're a bloke.

if you're a girlie on the rope, you need to use you imagination!!