In 2ch (don't know about 4ch), when the thread size reached 470kb, it's expected that someone should open a new thread for the topic to keep it from becoming too long. Maybe something to do with the archiving system there.
And someone invented the ASCII image of Patchouli, telling people to move to the new thread while she is bumping the about-to-be-closed thread.
Bump the thread easy!!!Ehh...Then, I'll borrow this book!Oh, so you are looking after the house? That's great.?
What's up?...it's about the time.Mukyuu~...
Don't take it away~...Mu- Mukyuu...!