it's the "Ziegelthread" in my offtopic.
it has a long tradition through several boards, having fighst with "ziegeln" (bricks).
it started as a spamming thread long time ago on a board where i worked before i got my own, and becomes a conversation thread where you talk to each other about anything in general
i can't give you a link, because my offtopic is closed to guest, also it's german, so would be hard to read amy