http://www.mangago.zone/read-manga/deichuu_no_hasu/
For some reason I liked this one, despite the fucked up-ness
(Apologies ahead of time) This fits all three of your inquiry:
https://myreadingmanga.info/graphite-bobbing-for-tommy-eng/
https://myreadingmanga.info/graphite-rescuing-tommy-eng/
http://www.mangago.zone/read-manga/kanpai_dj_unapai/
This was soooo wrong, but sure.
(Warning: those manga are quite disturbing)
And I have to be the idiot who says orc bride (gory as hell), feeding lamb and bait (also by nishin, read on myreadingmanga). whats inside the chest (tagame, also on myreadingmanga ) gave me goosebumps even though I mostly find bdsm ridicoulous and cant take it serious.
http://www.mangago.zone/read-manga/kanpai_dj_unapai/
This one is just the most fucked up shit in the entire world.
what's the most fucked up, weirdest, or just plain trippy yaoi that you've ever read? please share.