waterfalling

The action of taking a drink out of a bottle without actually touching it with your mouth, usually to avoid spittle left over, or "germs."

to catch your female partner's cum in your mouth when she squirts and then stream or spit it back onto her or into her mouth

to drink from somebody else's soda or pop by holding the can high, over your mouth and slanting it so that the drink falls right into your mouth without having you touch the can with your mouth; which would be unhygenic

To blend any two liquids (Mentos if desired) together and pour the mixture down your girlfriend's vagina and/or on her face. The mixture can be any two liquids, so fuck around with the Diet Coke.

When someone asks for a drink of something you already put your lips on, the pour it in to their mouth, which looks like a waterfall.

When a woman squats over the mans face before squirting and lets her holy refreshing water run into his mouth. Have you tasted the spring of life yet?

Tracing its origins to high school kids in Las Vegas, Nevada, the act of drinking from a friend's soda or water without your lips actually touching the bottle. Share your drink, not your germs.