Ratchet & Clank - Gagaga! Ginga no Gakeppuchi Densetsu, Shippuu Tengoku: Kaze no Klonoa Recommendations
These two manga has a lot in common, like the humor and storytelling. Instead of a amazing plotlines like Shounen titles usually have, these two only delivers crazy humor in almost every panel. Not to be taken serious, and not ment to either. Still very entertaining if you're into this sort of humor. Also, both released in the same magazine so.. win win!
If you're looking for mindless fun, just to laugh yourself nearly dead, these two are perfect for you.