I've been on Oxycodin for the last two weeks because of Rotator Cuff surgery. Oxy is a Narcotic, and they cause legit constipation.
Well I drank 10oz of Magnesium Citrate last night at 5pm (Will cause Bowel Movement in 1-6 hours on the label). Nothing happened.
At 8:15 my tailpipe, aka Karkatoa, let loose the trumpet of the apocalypses. I fled to the company bathroom and what proceeded was a Typhoon Class missile sub destroying my backfield.
I feel better.
TL;DR OP took an amazing shit.