6
The hardest tongue twister in English. 'Pad kid poured curd pulled cod.'
(people.howstuffworks.com)
News and other articles with clickbait bypassed by including the spoiler in the title (put it after a vertical bar "|") or in the post body. Same basic idea as reddit's savedyouaclick, but less uptight for now. E.g. it's fine to link directly to non-paywalled news sources. Mod volunteers wanted.
I find none of these hard, but then I’m not a native speaker