Top definition
simply put its short for Fuckin Old Guys
while on the bus, a whole bunch of f.o.g.s were standing at the next stop. it took twenty minutes for all three of them to get on. i was late to watch Baywatch reruns and i missed the NASCAR race

Jesus, i hate driving behind f.o.g.s when they only do 20 in a 40 zone..put your foot into it old man
by swimmerdog August 10, 2012
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May 8 Word of the Day
1. Slight sins or offenses
2. Petty crimes or small infractions
3. Las Vegas Punk Rock!
Peccadilloes shows rule.
by James Messina August 11, 2006
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2
You’re in your own world. It’s a state of mind, you’re just vibin’.
Person 1: *Dancing with no music on*
Person 2: what is he doing

Person 3: He’s in his own fog
by Rosegarden146337 September 23, 2018
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3
quite simply, Friend Of Girl... a guy who simply can not seal the deal with the ladies, or one who tries to be friends first and then develop the relationship but fails in the latter.
by PurpleKnight February 24, 2008
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5
Man look at him, he might be 40 but he's still a F.O.G.
by FOGlover November 29, 2009
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6
"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.
by Not A FOG October 19, 2010
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