Disturbing Thing You Saw

What defines a stan?
Because i got called a stan last week and i've been thinking about it
Does a stan mean like watching a streamer you like? Like a word for fan but its on twitch? Because i got called a phoodle stan when i mentioned that i watched him
Yeah i watch him but i'm barely on his streams-
Yeah i still don't know what a stan is
If that's how it works then i guess i can be called a/an
Kaboodle stan
BoomerNA stan
Snifferish stan
Spidey stan
Fundy stan
Phoodle stan
Sapnap stan
Skeppy stan
Foolish stan
Tubbo stan
Ranboo stan
Tommy stan
Karl stan
Quackity stan
Dream stan
George stan
Emilepsi stan
And so on and so forth
I watch a lot of streamers