A term used to describe someone, usually someone younger, who thinks they know something but their understanding is very basic or wrong.
Example 1
Son- Being a doctor is easy. You don’t need a degree just google what’s wrong with them and write a prescription.
Father- Hold on there sports fan. It’s a little bit more complicated than that.
Example 2
Friend 1 - Man,,, That old MF tryin to tell me how to box. He don’t know shit switch his old ass.
Friend 2 - Ok sports fan,,,, you do know that old MF was Mike Tyson right?
Son- Being a doctor is easy. You don’t need a degree just google what’s wrong with them and write a prescription.
Father- Hold on there sports fan. It’s a little bit more complicated than that.
Example 2
Friend 1 - Man,,, That old MF tryin to tell me how to box. He don’t know shit switch his old ass.
Friend 2 - Ok sports fan,,,, you do know that old MF was Mike Tyson right?
by Supascience September 3, 2021

by killer sans real September 23, 2023

Someone who either draws, writes, or commissions abusive/would be illegal pornography of characters and fictional worlds they supposedly like so much.
"Hey dude, check this out. I had this loli doujin writer make a story of one of my favorite characters."
"oh yeah? Who?"
"Nanako from Persona 4."
"You are one Toxic Fan dude. That's messed up."
"oh yeah? Who?"
"Nanako from Persona 4."
"You are one Toxic Fan dude. That's messed up."
by TravisTheCure February 23, 2022

(noun)
1: A person who likes to engage in socially unusual sexual behavior.
2: A person with an unusual or atypical sexual fixation who uses their fondness for language to manipulate or exploit others for their gratification.
3. Acronym for "freaky ass nigga."
1: A person who likes to engage in socially unusual sexual behavior.
2: A person with an unusual or atypical sexual fixation who uses their fondness for language to manipulate or exploit others for their gratification.
3. Acronym for "freaky ass nigga."
by daily_philanthropist June 9, 2024

Mark never ejaculated so hard until his brother hit him with the rhino fan. The pressure in the ass and tickle on the balls really set him off!
by Thomas broadway November 27, 2023

by LeSouffleDeVersailles February 2, 2025

When you have the irrational belief that you home team with be victorious despite all the bad decisions they make.
DaBears were down by 21 with under 2 minutes to go but my CFS (Chicago Fan Syndrome) knew they would somehow pull off the win.
by MoreDumbStuff November 15, 2020
