1 definition by Not A FOG
"fresh out of grade school." Basically, a grade nine, or when someone acts immature. It is interchangeable with the term "niner" only FOG is more fun to say...
-(Let's say Jill is acting immature), One may say, Jill is so FOG.
- All the guys on the rugby team are FOG.
- All the guys on the rugby team are FOG.
by Not A FOG October 19, 2010