{{Too listy/doc}} is a specialised form of the {{cleanup}} template that puts a message on the top of pages that have far too many bulleted lists. Bulleted lists should be avoided, particularly on in-universe pages. One very good reason for this is that bulleted lists do not display properly on wikiamobile, the skin seen when using mobile devices.
{{too many lists}} is another way to access this template.
Explain. Explain!
This article contains far too many bulleted lists. These sections should be converted into normal prose.