An unnatural, inorganic two-person group that acts as one. A smegan couple also spends an inordinate amount of time together. While not healthy for either component of the formerly two person group, Smegan means very well and is not toxic to surrounding members of the community.
The act of inserting marshmellows into the anus, placing your anus 2 inches above an open flame. After marshmellows have thoroughly melted remove anus and bend over allowing the marshmellow ooze to drip into your inner organs therefore reaching Nirvana.
"Dude Im still shitting marshmellows"
"First time making smorgans huh?"
"Yeah man, I never knew life could be so good."