Seitokai Yakuindomo, Naruto SD: Rock Lee no Seishun Full-Power Ninden Recommendations
Although funny for their jokes too, a very crucial similarity between these two anime and also what makes them twice as funnier is both have reaction-based comedy (don't know if there is a word for this term) i.e. characters themselves criticize the jokes, statements made and the mannerisms of characters (comically).
Plus both are episodic anime with continuing jokes.
And ofcourse, they are a great choice if you're in the mood for something light and silly :D