Answer:
Dry though I may be, I am still a sea.
You can do this with your friends. You can do this with your nose. But don't do it with your friend's nose!
One more than a duet.
I have eighty-eight keys but cannot open a single door? What am I?
A disposable item to keep your waste organized.
Almost everyone needs it, asks for it, gives it. But almost nobody takes it.