Flu Fright 

1. The irrational fear of a new influenza virus, stoked by hysterical news reporting and inaccurate information. 2. A way to increase ad sales and viewership on 24-hour news channels.

Susan is suffering from a bad case of Flu Fright. She's cancelled all of her committee meetings and refuses to come to work.

Flu Fright by Peter Kobs April 30, 2009

Flight Flu

The sickness one gets on an airplane from breathing disease-infested recycled air.

I'm sure I caught this flight flu on my trip from LA to NYC.

Flight Flu by TimGUNZ July 20, 2010

fighter's flu 

When a person claims to be a fighter and also that he or she is thinking about participating in a fighting sport, for example a jiu-jitsu tournament or a boxing match, but on the day of the event doesn't show.

Bob- "Where's Mike, he said he was thinking about competing."

John- "That's what he said last time. He always gets the fighter's flu and doesn't show."

fighter's flu by Bob's Chophouse July 26, 2009