A selection of headlines from stories in the news. They use English in a way that you might think is intended to confuse but it's all perfectly clear to the native speaker.
To have a bun in the oven is an idiomatic phrase which means someone is pregnant, and it has been adapted by The Sun for their headline of 'Run In The Oven', for the story that Olympic track and field athlete Jessica Ennis-Hill is expecting her first child.