For that first question.... what is it? 3 min without air, 3 days with out water, 3 weeks without food.
Option
a) not possible, you'd swallow it in your sleep. barring sleep:
b) not possible, you'd swallow it out of thirst. strong self-control:
c) not possible, you'd die of thirst or hunger. Medical intervention:
d)Nasty, rotten, skin cell filled, water/mucous/saliva