The webbing found in swim trunks that keeps your junk from flopping out and scaring kids.
"Look at the weird patterns on his sack! His junknet must be too tight!" ~Oscar Wilde
"Last time I wore shorts without a junknet, I was kicked out of Darien Lake and was asked never to return." ~Gary Busey
"His entire wardrobe is made of nothing but junknet! Even his fucking shirts!" ~David Bowie on Freddie Mercury