I'm from Western Australia and spent a lot of time in its deserts in my youth.
I have a very distinct memory of walking out among the spinifex as a child, needing to pee. Its hot, my bare feet are burning, the ground is unforgiving and I already have spinifex'ed ankles, so naturally I tread as carefully as I can, trying to avoid the sand and the spikes, only walking on the slightly less heated organic mats that surround some of the spinifex, a kind of carpet of twigs and leaves, gathered in pockets by the wind.
The natural urge is rising, and I stop paying attention and get a bit of pace, as relief must be had. I see a particularly appealing area, covered by this organic dust, and I leap over to it, get my body parts aligned, and begin the process of relief.
A few seconds into it, I feel something moving. The entire mat that I was standing on, is in fact, a field of trap doors. Maybe a hundred of them. They begin to open.
I have never levitated as hard and as fast in my life.
So my Tabula Rasa has given me this lesson: don't go into the spinifex to pee. Ever.