Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

A sundial has the fewest moving parts of any timepiece. Which has the most?

Can you figure out the logic I used to decide the order of the following words:
gun, shoe, spree, door, hive, kicks, heaven, gate, line, den

Using Only Five 5's and any mathematical operator make sum as 37

Why did Navjot Singh Sidhu put the new January calendar in the freezer

Who is that with a neck and no head, two arms and no hands? What is it?

How many words can a pen with half refill write?

When I go in I might cause pain. I cause you to spit and ask you not to swallow. I can fill your hole. What am I?

John is a strange liar.

He lies on six days of the week, but on the seventh day, he always tells the truth.

He made the following statements on three successive days:

Day 1: "I lie on Monday and Tuesday."
Day 2: "Today, it"s Thursday, Saturday, or Sunday."
Day 3: "I lie on Wednesday and Friday."

On which day does John tell the truth?

A non-stop marathon is the shared favourite sport of three brothers.

*The oldest one is fat and short and trudges slowly on.
*The middle brother's tall and slim and keeps a steady pace.
*The youngest runs just like the wind, speeding through the race.

"He is young in years, we let him run!" the other two brothers explained, "'because though he is surely number one, he is second, in a way." Why is it?