Here is a concise summary of the provided text:
**Title:** Prank on KAS (Kass UML) by Joko Winterscheid
**Summary:**
* Joko Winterscheid sets up an elaborate prank on his colleague KAS (Kass UML).
* KAS is led to believe he's being picked up for a shoot, but instead, discovers:
1. Posters of his face with the title "My Biography: I'm a Cult Cash Grabber" plastered all over Berlin.
2. A rented massive advertising space in the city announcing his "book presentation".
* The prank culminates at a book reading event at "Dusmann" cultural department store, where KAS is presented as the author of an autobiography.
* The event is actually a staged prank, with invited guests, journalists, and publishers in attendance, leaving KAS embarrassed and surprised.
Here are the extracted key facts in short sentences, numbered for reference:
1. **Event Setup**: A surprise event was set up for Kassähäufer (KAS) by Joko Winterscheid.
2. **Poster Campaign**: Posters with KAS's face were hung up in multiple locations in Berlin.
3. **Advertisement Location**: A large, prominent advertising space in Berlin was rented for the campaign.
4. **Book Presentation**: A fake book presentation event was organized at Dusmann, a cultural department store.
5. **Book Details**: The fake book is an autobiography titled "I'm a Cult" with KAS as the author.
6. **Event Date**: The event took place on October 27, 2016.
7. **Venue**: The main event was held at Dusmann, the cultural department store in Berlin.
8. **Guests**: The event was attended by the Berlin cultural scene, journalists, publishers, and other invited guests.
9. **Host**: Joko Winterscheid was the host of the event.
10. **Channel Promotion**: The event was recorded and promoted for the Circus Halligalli channel.