it works with practice
Step 1: Preperation
all you need is some sour tasting food
try skittles or if you are nuts, lemons
this helps to stimulate the salivary glands.
what happens is that when food is put into your mouth,digestion is started. saliva is needed to break down the trace amount of sugar as enzymes in the saliva are needed here.
this is for extra help if you are starting to do this.
experienced people can skip this step as they can use their tongue to stimulate their glands.
Step 2: Get the saliva ready
if no food is involved, fold your tongue down.
you should feel a vertical flap of skin. (you may use a mirror)
at the bottom of it you will notice what are two globules of flesh.
i know in me, those are my salivary glands.
if you are alien, it may be in your butt...
what you do is press your tongue downward infront of those two balls and wiggle your tongue to stimulate your glands.
practice holding your tongue there for twenty seconds
after ward you can try a minute
if you are alien, pinch your butt
this blocks off the two orifices ,holes , preventing saliva from coming out...
if you used a sweet, shift the sweet to the side of your mouth and press your tongue as stated above. not much stimulation is needed as the human reflex to food in the mouth is to produce saliva. like when you have just woken up, your mouth is dry and you put who knows what into your mouth and you start to salivate.
Step 3: Fire away
if you are alien just fart