 If you liked
Shimoneta to Iu Gainen ga Sonzai Shinai Taikutsu na Sekai
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 ...then you might like
Oshiete! Galko-chan
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Similar approach to sexual, silly humour, although in Shimoneta it is justified and based around a plot consisting on a dystopian future where dirty jokes and sexuality in Japan are opressed and censored from society. As crazy as it may seem, both series are lighthearted and goddamn funny.