Pocket worthyStories to fuel your mind At a certain age, getting up from the sofa can be a physical challenge. Mental Floss Read when you’ve got time to spare. Sign up to read this article later Collect articles, videos, and links from across the web and enjoy them on any device at any time. Haurrrrrrk. Gnnnnnh. Ennnhh. These are sounds people make when lifting heavy objects, removing a splinter, or suffering from constipation.