Answer:
What kind of cup doesn't hold water?
Possibly the word most commonly said before taking a sip
It is a common and favored clothing material among biker gangs and superheroes.
What has been around for millions of years but is never more than a month old?
Environmentalists want to keep this from drying.
What do you purposefully put lots of in and on your body, but run away from when you encounter it outside?