No, not in the prison-sense...
The first time I went to Moab, in the late 80s, Val and I rode the Slickrock Trail on a rainy cold day. We both knew that we would be out on the trail for a while, and it seemed like a good idea to carry lunch with us; not just snacks.
So, we went to Subway and got a couple of 12" subs. I stowed them in the trunk bag on my rear rack, and we took off riding. After a couple of hours, we decided to take shelter under a rock ledge and eat our lunch.
We pulled up to a handy overhang, and settled in. I unzipped the trunk bag and pulled out two bags of what had once been sandwiches. Now, they looked like salad made in a food processor. All of the bouncing around on the trail had done a number on the hoagies.
We managed to eat the shredded sandwiches, though. And we enjoyed them, too. It's funny how some good-old physical exertion on a cold day can make food seem pretty good, no matter what it's form.