Just as Sellotape selfies were gaining traction.... they get tossed back a notch to make way for a sock on your junk, supposedly for a good cause.

The newest trend on Instagram and other social media, is guys uploading pictures of themselves wearing nothing but a SOCK on their junk.  It's allegedly to raise awareness about testicular cancer.  But in reality, it seems like most of the guys doing it just want to show off how buff they are.

Note to (the overdressed) Flea from The Red Hot Chili Peppers, pictured above: Thanks for starting this one.