Riddle: I descend and ascend. If you go too fast, you can trip on me but if you go too slow, your destination seems like miles away. What am I?
Answer: Stairs.
Riddle: I get fiercely hot. I vary in sizes. Without me, the moon is all we'll see. It's impossible to walk into a room without at least one of me in them. What am I?
Answer: A lightbulb.
Riddle: I can make many people scream yet I can still be seen I make many things grow yet still I can melt the snow. What am I?
Answer: I am fire.
Riddle: What has 4 legs when it is young, 2 legs when it's not old but is about to be, and 3 legs when it is old? What am I?
Answer: I am a human. I crawl on 4 legs when I am a baby I walk on 2 legs when I am an adult, and I have a cane while walking when I am old.
Riddle: If I drink, I die. If i eat, I am fine. What am I?
Answer: A fire.
Riddle: What's long and hard and has cum in it?
Answer: A cucumber!
Riddle: What goes in dry and hard, but comes out wet and soft?
Answer: Chewing gum.
Riddle: What's at least 6 inches long, goes in your mouth, and is more fun if it vibrates?
Answer: A toothbrush. Come on.
Riddle: The more you take, the more you leave behind. "What am I?"
Answer: You take footsteps and leave footprints.
Riddle: Poor people have it. Rich people need it. If you eat it you die. What is it? 
Answer: Nothing.