The dots between words indicate this is likely a filename often found on archival sites or databases. Series Number:
These files were often amateur or semi-professional content, sometimes erotic or comedy-themed, circulating on German-language platforms. Over time, many such files became corrupted, truncated, or lost their extensions. Purzel.Video.Schatz.es.tut.gar.nicht.weh.101.Ge...
Websites like Khan Academy, Coursera, and edX offer high-quality educational content across a wide range of subjects. The dots between words indicate this is likely