Gintama, Saiki Kusuo no Ψ-nan Recommendations
These two are both extremely hilarious.
If you're looking for more fourth wall breaking, look no further than Saiki Kusuo no Psi Nan, a series about a highschool student with every psychic power in the universe. It's even published in the same magazine (WSJ) as Gintama, and features hilarity that rivals the series (if not even more). Parodies of shonen tropes get no better than these two. Both have a colorful cast of memorable characters, and crude artwork which gets better over time.