New term alert: Moose Knuckle

So this is a new term for me, of course - it might not be so new for you.

So the other day I posted a picture of Jon Hamm and some funky looking bumps in his pants. 

So, turns out that the funny looking bump is actually called a Moose's Knuckle.  (Thank you The New Normal for giving me a heads up on Moose's Knuckle.)