Its not a proverb. It's cute 8ch word play taken too far.

Threads = breads

So to post a new thread is to bake a new bread. The baker is the person who collects all the notables and creates a new qresearch thread when one hits the reply limit.

Notables (noteworthy findings) are the crumbs of the bread.

This Q post is about some recent 8ch drama. There is a problem on the Qresearch board where anons are "splitting" the breads early.

Unlike the dot win community (and other forums), 4chan/8ch rely on "bumps" instead of upvotes to increase the popularity of a post. Every response brings the post back to the top of the forum. Normally there's a single thread that everyone works on and once it hits the reply limit, whoever catches it makes a new one with the current list of notables at the top. Since posts rely on bumps to maintain visibility, the old one dies and the new one stays at the top.

The problem is that some anons are creating the new thread BEFORE the post hits its reply count. In doing so, they are separating notables, comments and findings between multiple posts and information is getting lost because no one knows which thread is the main one.

Q is telling the board to get its act together because its making it difficult for people to properly research.