Answer:
Bill's mom has four kids: Mary, John, and Alice. What is the name of her fourth child?
It's real until the trick is revealed.
One time every year, there is a very special day. Little have the same, everyone party a different way.
What is yours but only used by others?
What's at the head of an elephant and at the tail of a squirrel?
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?