Logic Riddles

Question: How does Halloween come before Valentine's day?

Question: A man goes down to the beach and starts walking on the beach, he has to get to the circus in a hurry and so he practices his act on the way, even though he had walked for an hour his feet weren't the least bit tired, why?

Question: Two people are born at the same moment, but they don't have the same birthdays.

How could this be?

Question: Change a long pause into a short one by doubling a letter.What are the words?

Question: In the middle of winter, a woman is found dead in her bed, with multiple stab wounds in the stomach. Soaked into the sheets is a massive amount of blood, along with blood drops on the carpet. On the side table beside her bed, there is a glass full of water mixed with blood. What was the murder weapon, where is it now, and how was she killed?