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What is saliva buffer zone?
The part of an item of food you and a friend purposefully don't eat when sharing said food item, as to not accidentally ingest some of the other other's saliva. Thus preventing the spread of germs.
Mark: "Dude can i share that piece of pizza with you? I'm starving.... "
John: "Sure... I guess, we just have to be sure to leave a saliva buffer zone..."
saliva buffer zone - video
