Rarely have I seen so much hilarious perversion built into a show. Seitokai Yakuindomo provides quite a primer on assorted Japanese fetishes and kinks. You have the shota-loving teacher, constant wordplay (frequently involving various mispronunciations centering around 'kinbaku' (rope bondage)), implied yuri, and plenty of references to h-games and gravure videos. There was even an homage to Tokimeki Memorial in one of the earlier episodes. All in all, good perverted fun.