When you stealthy come up on something and kill it preferably with a knife

The art of eating your own shit and washing it down with your own piss

A drink consisting of all of the regular ingredients for a margarita. However, rather than lime juice, the salt is stuck to the rim using one's own urine.

To Escape A Life Threatening Scenario Using Techniques Learned From Bear Grylls Worst Case Scenario TV Show

Your belly button. Contains everything you'd need to survive in the wild for 3 days. Can be used to catch dew or rain. Contains food crumbs since your last bath. Contains enough lint to braid a roap or start a fire. If you have an "Innie" bellybutton,you're fucked.

When using your own cum as lube while masterbating

Verb:
The act of going down on a girl until she squirts into your mouth and down your throat.