Answer:
When you need me, you must find me. When you find me, you no longer need me. What am I?
You walk into a room with a rabbit holding a carrot, a pig eating slop, and a chimp holding a banana. Who is the smartest animal in the room?
When it comes to me, you go on red and stop on green. What am I?
I am the kind of soda you must not drink. What am I?
I have a little pool with two layers of wall around it. One white and soft and the other dark and hard. What am I?
The more that there is of this, the less you see. What is it?