A form of visual post-art. Cascades are formed through followups of followups of followups etc. of posts, usually with one-word or one-sentence replies each time. The resulting triangle-shaped post can be hundreds of lines long, and can make for quite entertaining reading as well as just being cool-looking word art. Cascades also have the added effect, when used during a flamewar, of pissing off those who do not like them (see "fuckhead cascade"). 2) To participate in, or instigate, a cascade.