An erection that comes completely out of nowhere and results in women panicing, buying surgical masks, and hiding their children. Also causes people to run from the room once symptoms persist. Treatment includes laying in bed feeling sorry for yourself and social isolation. There is no vaccination for Swine Flu Boner and symptoms can often re-occur.

When you eat dirt for the first time and leave your family to build a shack in the woods

believed to become an epidemic, when you get an errection in the middle of no where symptoms are
-more than 20 boners a day
-non stop boner

-a boner lasting more than 10 minutes

The cure for swine flu boner is rubbing butter on your balls.