A 1940s term for the heaviest type of petting or love play.
After a long session of necking and petting, Mary Sue and Steve decided to move on to flinging the woo in the backseat of the car.
When a man rips off the fungus from his ballsacks and throws it at his wife and possibly his children
Honey, please don't pull a "Fungus Fling". The kids are around...
Thats the point honey