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Fucking Genius. A title awarded to those whom are intelligent and wish to place emphasis on their natural aptitude in matters of the mind.
Kumar: Dunahee is a FG, did you hear how well he did on his test?

Felipe: Yes, and I heard he didn't even study. I wish I was a FG.
by Dresmeister April 09, 2010
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Jul 12 Word of the Day
The horrible moment when you realise that you have accidentally done something very slightly wrong which has very bad (usually embarassing) implications for you. This is typically the moment of realisation that you just sent a dirty text message to a close member of family, typically your mother, rather than the intended recipient.
Message: "i'm free this afternoon so come over and fuck me senseless, my parents will be out all day"
Recipient: Mum
Message Sent
- Onosecond occurs here -
by Jimmed September 26, 2006
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2
FG stands for fuckgirl. It's a shorter form and sucres way of saying it. A fuckgirl is a girl who acts like a fuckboy. She strings them along and uses other guys when shes already maybe dating someone else. She loves getting attention from many guys. Its the type of girl who thinks shes hot and the shit and attempts to show it without trying but it is obvious that she is. She's particularly easy and will go for any guy that gets thrown at her.
Ryan: bro, she's texting over 10 guys..
Zack: she's definetly a FG..
by Rushhour10 October 29, 2015
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3
Fangirl, usually a young girl obsessed with boybands.
Most notable in the fangirls of KPOP groups
A: Jessica is so obsessed with EXO and cute Korean stars
B: What an FG
by cheese374 April 16, 2014
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4
Fg literally means "Friendly girl", it can be used in a variety of situations where one may want to talk about a girl but without actually referring to her directly, so the term fg may be used. Fg also has a double meaning now this cant be defined for it is for you to discover... the antonym (opposite) of an fg is called a "ufg" which means un-friendly girl (this has a double meaning as well)
Example 1

Guy 1: Woah! That girl over there is an fg!

Guy 2: Yeah man! Can't lie!

or

Guy 1: Do you think that girl is an fg?

Guy 2: Well sorta... Could be better

Example 2

Guy 1: Awww wtf?! That girl over there is a ufg!

Guy 2: I know man, she disgusts me!

or

Guy 1: Is that girl over there an fg?

Guy 2: Nah! Shes more like a ufg.
by AceW3RM November 15, 2011
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5
Fat girl, could say field goal, foxy grand ma, ect. Used by guys to keep the fattys from knowing what they are talking about.
Kyle: Dude check out them Fgs, Ronnie, they comming for you.
Ronnie: Shit man, i hate them fruity gnomes.
by Seagraves February 15, 2007
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6
An abbreviation for the popular show, Family Guy, used mainly on internet forums.
Did you see last night's episode of FG? I missed it.
by Laylor April 25, 2005
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