A euphemism meaning to have diarrhea, explosive or non-explosive, and/or chronic
digestive problems. Can be used as a noun or a verb. Originated from
the Metal Gear videogame series from Johnny Sasaki, a
luckless soldier with chronic digestive problems.
As a noun- Dude, I ate some
rancid beans and had Johnny Sasaki all night.
As a verb-
Not cool, man! You
Johnny Sasaki'd all over my couch!