It was fountain number 98, the one in General Wille Strasse. It made it all the way to Blick, via reddit and beyond, after someone finding it while in Switzerland… and couldn’t resist posting it . Just Follow the link – it is definitely worthwhile the detour. By the way – it might be not safe for work. And yes, it looks like penis.
A big thank you to @KatharinaBart for sending this.