You found it!

Too much content on one page massively clutters, but Collape-o-matic is the simplest most effective way to create collapsable paragraphs, allowing you or your clients to greatly improve the visitors experience of the site. Creating expandable/collapsable content is also simple to do, and support is quick and COURTEOUS. As with most plugins, make sure you read forums first before updating automatically to a new version. But once bugs are found and acknowledge, fixes follow quickly. Great plugin!