Here's how it works:
* Boring: This is the adjective in its base form.
* More boring: This is the comparative form, used to compare two things.
* Most boring: This is the superlative form, used to compare three or more things.
For example:
* "That movie was boring."
* "This book is more boring than the last one I read."
* "Of all the lectures I've ever attended, that one was the most boring."