Love.

Let's say that John father was 60, his mother was 25, and his mother's father was 45. Because everyone has two grandfathers, it is quite possible for a maternal grandfather to be younger than one's father.

One thousand is the first number that, when spelled out, contains an a. (One hundred and one if you count the "and.")

Few.

Grape Rape Ape Rap.

Drop the "S".

171

Four cats, each near the tail of a cat in an adjacent corner

Orange

My mom gave me a small brother, are two differents brothers.

Egg

The Horizon.