I just came up with the idea, It's simple.
New page.
Poster 1: I am the king! This topic is now about puppies.
Other posters: Things about puppies.
Poster 3: This pages OP is stupid.
Poster 1: AS KING. I BANISH POSTER 3 FROM THIS PAGE.
New page.
Poster 2: King me! This topic is now about examples.
The first poster on each page becomes that pages "king".
The king can derail/rerail the topic on that page however he pleases, Until a new king is crowned.
This topic is now about getting this topic popular.