Fun Riddles

Question: What belongs to you but others use it more than you do?

Question: You put me in hard.
But then I become soft.
Blow me hard and I will get bigger.

What am I?

Question: Four cars come to a four way stop, all coming from a different direction. They can't decide who got there first, so they all go forward at the same time. They do not crash into each other, but all four cars go. How is this possible?

Question: What can one not keep, two hold, and three destroy?

Question: What does a man do only once in his lifetime, but women do once a year after they are 29?