It can happen: you are in the wild and ...Nature calls ...
and no toilets around
So what to do?
This is the right procedure if you have to go:
Take with you:
a shovel: so you can make a hole
a flash-light : when its night.
toilet paper - no, you will not find any leaves.
a lighter - to burn the toilet paper ( burying it is no good, since it is so dry, it will not decompose).
And remember: there are quite a lot of snakes (and scorpions?) around here.
In the Etosha Ntl park you better try to "plug it" until the next toilets (yes, here there are some)