Literally: “egg-laying, wooly dairy pig” / meaning: all-rounder, all-in-one solution
Have you ever seen a job posting and thought to yourself: What kind of reality do hiring managers live in? It is not uncommon for them to look for experts who have been working in the industry for at least 20 years, have experience abroad, leadership skills, negotiating expertise in 5 foreign languages, excellent looks and must have gone to the moon (twice) and to Mars (once). For an internship.
In other words, they are trying to find an Eierlegende Wollmilchsau. This term is used in the German language for persons, devices and anything else that is required (or advertised) to serve an unrealistic number of purposes in a perfect way. Like, for instance, a blog that teaches you something, keeps you entertained and fills out your tax declaration at the same time.