When someone is very enamored with a sports figure or celebrity that it takes over their thoughts and actions; like a sickness
1) I have Fandisease about Jennifer Aniston all the time. I wish I was her Aveeno lotion.
2) Friend-A: Christiano Ronaldo is the greatest futbal player ever! I wish I was the ball he kicked around on the field. Friend-B: Man, you having Fandisease about that player... You need a doctor.
by bronx bandit March 23, 2015
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