A man and a dog were going down the street. The man rode, yet walked. What was the dog’s name?

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

A swan sits at the center of a perfectly circular lake. At an edge of the lake stands a ravenous monster waiting to devour the swan. The monster can not enter the water, but it will run around the circumference of the lake to try to catch the swan as soon as it reaches the shore. The monster moves at 4 times the speed of the swan, and it will always move in the direction along the shore that brings it closer to the swan the quickest. Both the swan and the the monster can change directions in an instant.
The swan knows that if it can reach the lake's shore without the monster right on top of it, it can instantly escape into the surrounding forest.

How can the swan successfully escape?

I have nine bottles of wine and one of the nine bottles is poisoned.
I need to find the poisoned bottle with two facts
(1) Poison is deadly, only a sip will cost death
(2) I have two mice to do so.

How should I do it?

The day after tomorrow will be three days before Tuesday. Can you find out what is today?

I’m tall when I’m young, and I’m short when I’m old. What am I?

How many pluses should we put between the digits of 987654321 to get a total of 99, and where?

I have some blue and red sock in my drawer. I have a total of 4 socks. I pick 2 socks and the chance that I get a pair of red socks is 1/2.

What is the chance of picking a pair of blue socks?

When I asked a girl's name she told me her name is the date '07/09/2001'.

I thought for a few seconds and then I got her name. Do you?

It comprises roots which nobody sees,
Much taller than those trees,
Up and up it goes,
Still it never grows?