What does below rebus means ?

Where do you go to learn how to make ice cream?

What does below Rebus say?

XLR8

John killed hundreds of people mercilessly and yet the police were not able to put her behind the bars. Why?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

Can it be possible to build a house that has all its four walls facing towards the South?

There is a jar in which there are two types of candies.
20 blueberries and 16 strawberries. You perform the following steps:
1) You take out two candies.
2) If the two candies are of the same flavour, you add a blueberry one otherwise, you add the strawberry one.

You repeat these two steps till there is just one candy remaining in the jar. Which flavoured candy will be left?

All of Jacob's shoes are red except two.
All of Jacob's shoes are green except two.
All of Jacob's shoes are yellow except two.

How many shoes does Jacob have?

I make a loud sound when I’m changing. When I do change, I get bigger but weigh less. What am I?

Solve this riddle by finding the odd one out from the rest.