I really really enjoyed 'Danshi Koukousei no nichijou'. In particular anything-goes hijinx parts, and nice lore.
I also enjoyed metahumor from Saekano and Monogatari, but they lean in their respective category more than comedy part.
Monogatari is a bit heavy and needs attention, so I'm looking for something light and humorous. I don't much enjoy fan service/lewdness unless it serves the purpose of the story or as comic relief.
Any suggestions welcome!