Phone Booth Stuffing
https://en.wikipedia.org/wiki/Phonebooth_stuffing

Death Portraits
http://www.bbc.co.uk/news/uk-england-36389581

Polar Bear Pictures
https://www.theguardian.com/artanddesign/shortcuts/2015/jul/19/the-mysterious-german-fad-for-posing-with-a-polar-bear-imitator
http://www.dailymail.co.uk/news/article-3169314/Is-bizarre-craze-Nazis-beachgoers-photo-series-reveals-historic-trend-Germans-posing-pictures-man-dressed-polar-bear.html

Lotus Birth
https://en.wikipedia.org/wiki/Lotus_birth

Tech Decks
https://en.wikipedia.org/wiki/Fingerboard_(skateboard)

Pole Sitting
https://en.wikipedia.org/wiki/Pole_sitting
http://www.badfads.com/events/flagpole-sitting/

Six Day Racing
https://en.wikipedia.org/wiki/Six-day_racing#The_first_American_six-days

Goldfish swallowing
https://en.wikipedia.org/wiki/Goldfish_swallowing

Staged Train Crashes
https://en.wikipedia.org/wiki/Crush,_Texas#Aftermath
https://owlcation.com/humanities/Head-On-Train-Crashes-as-Entertainment

Black Teeth
https://en.wikipedia.org/wiki/Ohaguro
https://www.thevintagenews.com/2016/01/18/tudor-england-the-teeth-of-the-rich-often-went-black-from-sugar-it-was-fashion-among-the-lower-classes-to-blacken-their-teeth-to-show-they-were-rich/