Why is there no silly, funny anime?

[BoringSupreez]

As mentioned, there are a lot, but Japanese humor doesn't translate well so it's not released overseas. What Japanese think is funny isn't really funny to non-Japanese.

What about American humor? Is it funny to the Japanese?

Must be, 'cause they watch Spongebob too.

[Michi]

Magical Shopping Arcade Abenobashi

Love Abenobashi. Crazy show, and I haven't watched it for a while, but I do remember an overall plot. Don't get me wrong, there's so much randomness going on that it feels like an afterthought, but it's still there.

[skyknight]

No one here mentioned Gintama!?

Taking characters from the end of the Edo period and throw in Japanese modern culture, you do get a sick mix of fun.

[neilencio]

I think it's mostly the wordplays and puns that are unaccessible to non-Japanese. They're not really the types of humor that translate well over language barriers. Animes still have slapstick humor, which is universal (not in the way that everybody will find it funny, but everybody will understand that it's supposed to be funny.).

Off tangent, I believe kancho is still funny even if you're not a japanese kid (our country has a local version called "turbo").

[AppleQueso]

Excel Saga was mentioned, and I quite liked that one. No continuation between episodes that I remember, just a bunch of random humor. I can see the main character's voice driving some people from watching this, but I enjoyed it.

There is continuity in the sense that characters will be introduced in episodes and then continue showing up from then onward, like most sitcoms or something. Plus occasional references to previous episodes, but yeah it's hardly there.

[VGMStudios]

the one that always comes to mind is:
I my me strawberry eggs.

I found it very funny and silly.