Prune is a dreadful name for a restaurant. I hope they have lots of restrooms.:)
Really, you just expect them to have nothing but high-fiber items on the menu. Reminds me of when I worked my way through college working for the food service company. Whenever we had groups of senior citizens coming to campus, we made sure to serve plenty of prunes for breakfast, and my job was to dish 'em up (three to a bowl) - the prunes, that is, not the oldsters.