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A term used when men act like little 5 year old girls
Dude shut up you sound like a flu-flu
Flu-Flu by Beetlejuice3 January 10, 2016
Flu-Flu is another term for vagina. Often used when dealing with a baby when changing a diaper.
"Cover that Flu-Flu, no wants to see a baby bug."
Flu-Flu by NOS BOD January 28, 2009
To upset, or get on someones nerves.
To irritate
This broken down car has been giving me the flu flux.
flu flux by Traci grl August 7, 2010

MAN FLU [ man flu] 

An affliction that affects the Y chromosome in the human population. symptoms include delirium, headaches, chronic fatigue, catarrh, severe confusion, sniffles and a bit of a cough. Has been linked to hypochondria though as yet no scientific link has been proved.In the event of a suspected case of Manflu, you are advised to keep the patient hydrated via the normal fluid intake: to wit;usual fluids (water, fruit juice beer and spirits). Fat intake is also recommended to give the patient calorific energy.We recommend protein, carbohydrate, fat in the ratio of 2:4:9.
IN NO CASE should the suspected patient be made to perform any arduous tasks since this will only lead to a relapse if said patient is not ready.
As stated and signed.I.M.Llyere (W.H.O.) European Advisor in Pathogene Studies0.
"MAN FLU man flu" MAN FLU
"MAN FLUman flu"
J.L.P.Smith versus The Government of the U.S.A.
MAN FLU [ man flu] by will8371 January 17, 2009

Flu Shot Flu 

A non-medical term for the 3-5 days of feeling like crap after you get your flu shot.
Dude 1. Hey, what’s wrong with you? You look like shit.
Dude 2. I also feel like shit. I got my flu shot yesterday, now I have flu shot flu.
Flu Shot Flu by Ski25 November 13, 2011

flu-de-flu

a term used in a brass band for lack of articulation
mrs bird - “it need to be less flu-de-flu guys”
flu-de-flu by selbinator October 24, 2019