Watching two man comedy acts and laughing loudly relieves my stress.
A manga genius! For some reason, this is a comic dialogue or two man comedy. Look up "manzai" on YouTube for some good times if you don't know what this is. It's not exactly the same, but 漫 DOES refer to manga, which is a type of comic book. Take the "comic" part from "comic" book, then change it to the "haha funny!" meaning of "comic," and then imagine people doing a dialogue. Then, you have a comic dialogue. Lots of steps, but hopefully it'll get you there.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own. Watch out for the rendaku.