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

Railroad Crossing, look out for the cars. Can you spell that, without any R's ?

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

If an electric train is travelling south, then which way is the smoke going?

A boy and a girl are sitting on the porch.
"I'm a boy," says the child with black hair.
"I'm a girl," says the child with red hair.
If at least one of them is lying, who is which?

It was a dark stormy night and a couple were in a car driving madly to a city. The car broke down and the husband had to go get help from someone who spoke his language. He was afraid to leave his wife alone in the car so he locked the car before leaving. When he came back, the car was in the same state as he had left it but his wife was dead, there was blood on the floor and there was a stranger in the car. What happened?

Today, I celebrated my 32nd birthday but I was born in 1972.
How is this possible?

Can you calculate the probability of getting a sum of six when a dice is thrown twice?

It is a nine-letter word.
The exact opposite of the phrase "friendly and outgoing"
It contains the word "over".
It starts will a vowel.

What is it?

It walks on 4 when its young, walks on 2 when it's older, and walks on 3 when its very old?