Very bored in Kenya in 88, we stole a 10 man ration pack and tipped the contents out onto the table.
We turned all the tins upside down, shuffled them up and everyone chose one.
What ever you picked, you had to eat, all of it.
I got oatmeal blocks, tough going, but not impossible. I didn't need the bathroom for a few days after that, and when it came....
One lad got two tins of margarine... he was a frequent visitor to the s**tpit.