NOT TO BE CONFUSED WITH SOLID SNAKE
The Smart Snake is a highly intelligent snake, meaning that it is not stupid. It enjoys getting eaten on a regular basis, but at the same time, finds it very painful. Only he knows why, but he won't tell.
Freak with the Hood killed the Smart Snake because he didn't join, but then brought him back to life after the Police knocked on his door (they were actually there to return his car keys, but he didn't know that).
Azure revived him.