Man Flu is a crippling and debilitating disorder indiscriminately striking down male members of the human species without warning. The illness is often referred to pejoratively by female members of the species who are in fact immune from the illness as man flu is now known to exclusively attack the XY chromosome carrier. If Man Flu is kind enough not to kill the infected party it will definitely leave him weak, sick, hurting everywhere and in dire need of TLC.
Now..... Need i say more
"Hurty Knee" - devastating condition.
well well will ye believe us now ladies