A strong physical attraction to people with red hair.
When I first saw her, I couldn't resist Lindsay Lohan, 'cause of my red fever.
A disease suffered by Nebraska football, basketball and baseball fans that causes them to become arrogant, insufferable tools in all forms of written, verbal and non-verbal communication.
It often leads to delusions of grandeur and pathetic statements comparing Nebraska athletics to things that are actually important.
"That guy just punched a nun for not wearing red!"
"He's got red fever."