Yes you can unfortunately their are veins in the tongue and if the piercing is not done properly it can "nick" one of these veins and you could die.
Not if you take care of it properly.
A tongue piercing is a piercing through the tongue or any part of the tongue, including the web underneath.
If it's healed, yes.
what do you if you get a puss pocket in your tongue after a tongue a piercing"
two weeks! defiantly wanna avoid a yeast infection on your tongue!
If it's not healed, you should avoid it.
Well you can but I don't think that you're supposed to.
No. A genital piercing includes any piercing on or around your genitals. Not your tongue.
No tongue piercing doesn't cause cancer.
Food would be a good thing, unlike a tongue piercing you can eat almost anything so long as you rinse after eating and stay on something for swelling.
Its just a fancy way of saying "tongue peircing".