2. A sexual act which incorporates tea bagging as well as the cleveland steamer where one partner "poops" on the other's chest and then dips the scrotum into the feces. (in order for this to be defined as a rustysack, the poop must be reddish-brown in color).
3. An incorporation of the chlojob
4. The dipping of the testicular sack in poop (preferably with the poop on boobies)