Answer:
A mechanism to discover who is following you.
Whipping one of these out in the wrong setting is said to be terrible luck.
There is 10 birds on a branch, a man shot 5 of them. How many were left?
This is a pearshaped fruit with a rough leathery skin, smooth oily edible flesh, and a large pit in the center. It is most used in guacamole dip
Never ahead, ever behind, yet flying swiftly past; For a child I last forever, for adults I'm gone too fast.
My days are numbered. What am I?