tinvintory 

The action of checking your tin of dip to see how much dip you have left

Tyler had passed around his tin, and decided to take a quick tinvintory to see if he needed to buy a new one.

tinvintory by John 55 March 6, 2009

Twinventory 

The act or action of constantly taking inventory or checking to make sure your twins (balls) are still there.

Dood, check that guy over there always grabbing his balls every five minutes. Oh don't worry he's just taking Twinventory!

Twinventory by Sfinktourboy January 2, 2012