I think the parent refers to that which is a classic one: https://www.physicsforums.com/threads/the-link-between-a-horses-arse-and-the-space-shuttle.162604/ htt

I think the parent refers to that which is a classic one: https://www.physicsforums.com/threads/the-link-between-a-horses-arse-and-the-space-shuttle.162604/ https://www.physicsforums.com/threads/the-link-between-a-hor...