I'm my local dialect of Arabic we say some hilarious expressions for peeing including:

I'm going to fly some water (like flying a kite)
I'm answering nature's call
I'm paying the judge.

My favorite term for pooping in nature when we go hiking was:

Planting a mine

But how did you get that from: "This blud fr ong"?

So, care to explain for us, uncool people?