An elaborate sexual maneuver; simply defecate into a air
tight bag and place it over your partners
head allowing minimal room for them to breathe, commence coitus from the rear, either hole is fine. Then in the last few seconds before climax remove the bag swiftly from your partners
head leaving them gasping for air and likely tightening the vaginal / rectal cavities ensuring maximum enjoyment.
"I paid this prostitute an
extra $50 last night to do the chocolate space
man, I forgot the pull the bag off her
head though and now I don't know where to bury her"