Stan 

A reference to the Eminem song Stan. The song is about an overly obsessed fan (named Stan) who writes letters to eminem and ends up driving off a bridge with his pregnant wife, because Eminem didn't write him back.

The terms means a very very overzealous and obsessed fan of a celebrity/band/cast of a tvshow or movie.

Person 1: I just love Ariana Grande so much I would die for her I would track her every move if I could

Person 2: woah don't be such a stan

Stan by Sailbee January 11, 2017

stan 

an obsessive fan of a celebrity. Originated from Eminem's song Stan.

person 1: those kids over there are going crazy for Justin Bieber

person 2: I know right, there all just stans

stan by blibmanj May 9, 2019

Stan 

Based on the central character in the Eminem song of the same name, a "stan" is an overzealous maniacal fan for any celebrity or athlete.

A Typical Kobe Bryant Stan would say something like.
"Kobe Bryant scored 81 points last night. Kobe could beat God himself in a game of 1 on 1 hoops. To hell with Michael Jordan or Wilt Chamberlain, they arent on Kobe's level!"

Stan by Terminator-C February 12, 2006

Stan 

Stan is a mix of stalker and fan. Its a crazy fan who basically worships a celebrity. The word was popularized by Eminem and now it is generally used as a verb.

"Demi Lovato is a true queen! We Stan!"
"We stan a good sister!"
"Yeah, he's a crazy stan, bro."

Stan by hermoninny January 16, 2019

stan 

a stan is someone who is a really committed fan of a celebrity, sometimes verging on stalker-esque

I'm such a stan for Ashnikko that I dyed my hair blue and turned up at her house in the outfit she wears in her music video for 'STUPID'

stan by ashnikkostan March 15, 2021

Stan 

unlike what most k-pop fans think, stan is not just liking something. a stan is a psychotic fan who would do anything for the attention of their idol. (term originally by Eminem in his 2002 song Stan)

person 1: dude did you see how person 3 killed himself because X didn't respond to his letters?
person 2: what a fucking stan

Stan by LaserRaptorz August 1, 2019