Answer:
Consuming food would be pretty tough without these chompers
Lots of them make up a word, And lots of words are in them. It's easy when you think about it. A while ago we stamped and mailed them.
What kind of cup doesn't hold water?
What bank has no money?
It is a common and favored clothing material among biker gangs and superheroes.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?