In no particular order:
https://en.wikipedia.org/wiki/Greek_words_for_love
https://en.wikipedia.org/wiki/Affair_of_the_Sausages
https://en.wikipedia.org/wiki/Kimjongilia
https://en.wikipedia.org/wiki/Trout_tickling
https://en.wikipedia.org/wiki/Soramimi
https://en.wikipedia.org/wiki/Exploding_animal
https://en.wikipedia.org/wiki/Devil_Eyes (pictures here)