Answer:
What has been around for millions of years but is never more than a month old?
What grows when it eats, but dies when it drinks?
In many hallways you would stand, if not with this in hand.
What can't you see, hear or feel, until itβs too late. What shadows love, and shopkeepers hate?
What is filled with air and sometimes a gas, tied to a string and often seen on your birthday?
When is it bad luck to see a black cat?