this is the art of wiping ones bum, while staying continuously aware about the environment. One will double use toilet paper by double folding and then reusing the paper at hand. One may also bypass the paper and go straight to the shower for the cleanse.
Dude, I did my part to stay green, I just green wiped. I'm like that little bear from the Charmin commercial, you know the one having trouble with the little pieces of paper stuck to his ass.
Hey you ran out of shit tickets, "naw i'm broke, just green wipe and quit bitchin"