The armpit women of generation Z (and Y if unemployed). They spend countless hours trying to get noticed by their idol and comment with irritating jargon under their idol's uploads. They are cult-like women who form group "fandoms" and resort to an idiocracy known as "shipping" which is sexually or creepily imaging their idol dating or having sex with an other heart-throb idol. They are found watching and drooling at profiles, pictures, and YouTube uploads of popular attractive teens and twenty-somethings. They are rapidly expanding and must be exterminated at once.
For further research on fangirls, get on YouTube, Tumblr, or Instagram for that matter...
by mermelada July 12, 2014
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A psychotic female specie that is unexplicablely obsessed with a celebrity, band, book, anime, show, etc; Disturbed beings; Worse than women on their periods;
Person: You are going batshit crazy!!!

Fangirl: No I'm fucking not! There is nothing wrong with stealing Liam Payne's boxers and wearing it for the day!!!
by My Little Pony Rules! October 7, 2014
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A female who falls hard for a band member or fictional/non-fictional person they step over the line of a healthy fandom to a obsession
Friend: Your such a fangirl
Me: OMG look there is Luke Hemmings

Friend: omg where!??!?
Me: now who's the fangirl
by MinnieMouzze April 8, 2015
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Fangirls, on the internet, are people who are obsessed with or in love with a fictional character. Most are bad but some are good. (They'll often attack you if you like the same character....) Don't attack the good ones. Duh.
Person: Heard of Scootaloo Loves Sans?
Person 2: Yeah, they're a sans fangirl, but they're really nice!
by A random fucker February 9, 2019
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someone who over reacts when they see, hear about, or think about a famous band, actor, anime character, or youtuber (btw i only know this cause im a full time fangirl) (ONE DIRECTION, 5SOS, O2L, CONNOR FRANTA, AND MORE YOUTUBERS, CHANNING TATUM, AND ADAM LEVINE ARE MINE)
Average Fangirl: Harry Styles is like so hot :D
Me: IM GONNA MARRY HARRY STYLES AND WE'RE GONNA HAVE LITTLE BABY HARRYS AND WE'RE GONNA LIVE IN THE AFRICAN JUNGLE AND GET ALONG WITH ALL THE ANIMALS OMGGGGGGGGGGGG
Overly Obsessed Fangirls: I WILL KILL ANYONE WHO EVEN THINKS ABOUT HARRY AND I WILL FEED YOUR BODY TO TIGERS
by Hoopzzzzz October 12, 2014
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Fangirl is one who obsesses over celebrities, fictional characters, et cetera. These delicate creatures can also be known as ‘Otakus’, but typically an otaku is one who spends all day inside, alone, and watching anime. You could very easily say that a very large proportion of tumblr users are, in fact, fangirls.

However, fangirl isn’t just a name; it’s also and action. For example, you could say you ‘fangirled’ over something, meaning you had a moment in which you probably squealed like a pterodactyl over something/someone.

Fangirls are VERY sensitive about their OTP’s, so be careful what you say in front of them...
Tina: I LOVE Tom Hiddleston SOOO much!
Lucy: You are such a fangirl...
by pseudōnymos anne June 24, 2014
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A girl whose love for a fictional character inspires them to create their own OCs.

These people are typically ridiculed by boys with no artistic capabilities and hobbies who just wanna take the fun out of things for girls or just others.
Quara Sans' Girl is a well know Sans "Fangirl"

She's known for her great art and animation
by Calico Hax January 11, 2022
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