Good Riddles

Question: What did the red light say to the green light?

Question: I am the only organ that named myself.What am I?

Question: What goes through towns and over hills, but never moves?

Question: A young woman is attending her mother's funeral. While there, she meets a man she has never seen before and falls in love immediately. After the funeral she tries to find him but cannot. Several days later she kills her sister.

Why does she kill her sister?

Question: I go up and I go down,
towards the sky and the ground.
I'm present and past tense too,
Let's go for a ride, me and you.

What am I?