A very unattractive child. Seemingly full of body hair and rarely showering.
Hey, did you see that kid? She was a total fallon!
by Kbeef January 3, 2010
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A girl, often tends to be daring and slutty. This girl is a big partier but too insecure to have anyone take her home. Their lack of commitment usually ends in hookups and heart breaks. Also, slang for "cunt".
"Wow! Did you hear that girl Fallon took a shit on a boy at that party last week?!" "No way man, it's a good thing I never took her home!"
by daltcase January 4, 2014
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An incredibly smart and nice girl. Usually blonde, tall, and blue eyed. Loves waffles. She can be bossy and loud at times. She's usually lesbian. Has boobs the size of an entire state. Overall, Fallon's are pack leaders and everyone follows them. :)
Wow wow wow Fallon told me I was in the group!

Aww man you lucky!

I know to bad she's lesbian.
by Nobodyspexcial September 27, 2013
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A British name for a slutty woman
Man, she must be Fallon
by Dinoflagellates October 23, 2016
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Fallon is a beautiful girl who is loved by many and makes many hard
I'm so hard because of Fallon
by CallMeBigDickDaddy April 21, 2019
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Typically a sexy light brown haired- brown eyed and lightish/tanned skinned (depends on the time of year) Colombian girl with big tits and a nice ass. Fallon’s usually have a good sense of humor, and being around them you know you are up for a good time. If a Fallon takes you home to her family be prepared for loud Spanish conversations, and lots of dancing. Fallon’s are great dancers and are very tied into their culture,but act extremely white around non-Colombians.

A Fallon will care for you and take care of you and always be there for you it’s like the perfect combination: sexy, pretty, talented, caring , perfect wife material
Did you see that girl?
“Oh yeah that’s Fallon”
She’s so sexy I’m going to talk to her
“I think she’s Colombian, good luck
by Sippyshit December 13, 2018
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A term used to describe a really hot girl.
(When talking about a girl) wow that is a hell of a fallon.
by Taggy February 14, 2006
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