A person that turns from fan to fanatic to stalking.
"Swimfan Baldwin really did a number on Bieber."
"Swimfan Baldwin really studied all of Gomez to try to be like her."
by Glitterz710 March 12, 2023
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When someone stalks/ obsesses over another person, like wants to BE/be with that person.

Eg. Hailey Baldwin is a swimfan for Justin Bieber and his ex Selena Gomez.
Hailey Baldwin is a super swimfan for Selena Gomez, it's quite creepy.
by BonBonBond March 12, 2023
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The act of calling someone repeatedly, instead of leaving a voicemail the caller will simply hang up and continue to redial 5-100 times or until the caller answers.
I have no idea where that bitch is- I have been swimfanning her all night.

I really liked that guy but then I got totally wasted and swimfanned him at 4am, and now he is totally over me.

That girl is a total swimfan- thats how you know she has been drinking.
by Marie Elena February 13, 2008
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Becky:Have you seen Swimfan??
Jenny:No
Becky:You whore
by Kevin May 5, 2004
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adj. one who exibits stalker-like behavior
That girl is such a swimfan; i wouldn't be surprised to see her out my window in the middle of the night
by Yael February 9, 2004
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When a girlfriend or someone you are dating turns out crazy or stalks you.
Hey you ex really turn out to be all swimfan.
by Jesse Huerta January 17, 2008
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a girl who is obsessed with a guy and won't take a hint
Stop acting like swiman!
by lisagirl April 7, 2003
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