Fannysplaining

When a female is explaining something to someone who already knows. It can be to either a man or a woman.

you don't need to fannysplain that to me i already know .... fannysplaining !

Fannysplaining by Winobot Dublin November 7, 2025

fansplaining 

When a fan tries to explain something to a pro athlete, coach, GM or entertainer about the pro's craft. Takeoff of mansplaining.

(fan) "If you open your batting stance, you'll see the ball better."
(pro athlete) "Quit fansplaining! I'm the pro athlete, not you!"

fansplaining by The Runs June 10, 2017

Fansplaining 

The act fans of a particular franchise (TV series, book series, sport, etc.) talking down to or about fans that they don't see as "legitimate" fans.

Karen is always fansplaining about how new and younger fans are ruining fandom.

Fansplaining by Fandom Raider September 24, 2019

Fansplaining 

A spiel given by a comic book/film franchise know it all/fan boy about something in the movie condescending over others who are understanding the plot at face value.

"You don't understand George, Jean Grey eventually becomes the most powerful X Men so that's why her eyes turn red."
"Stop fansplaining , Garry."

Fansplaining by CrankyBob June 6, 2018