Funny Riddles

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

Question: Weight in my stomach,trees on my back,nails in my ribs,it's feet I lack.What am I?

Question: I'm heavy but not backwards.

What am I?

Question: What gets longer when pulled,fits between breasts, slides neatly into a hole,has choked people when used improperly,and works best when jerked?

Question: Light hides me and darkness kills me.

What am I?