Riddle: If a rooster laid 11 eggs and the farmer took 5 of them and another rooster laid 14 eggs and 5 of them were rotten. How many eggs were left?
Answer: 0, Roosters don't lay eggs.
Riddle: Why does the teacher wear sunglasses when she comes to the class?
Answer: Because the students are bright.
Riddle: I am between things; in teeth, in time, in fences; I can be wide or tiny. What am I? 
Answer: Gap.  It’s pointing to “gap” because a gap is the space between things. In teeth: a diastema is the gap between teeth. In time: a time gap is the interval between events.  In fences: gaps are openings between slats or posts. “Wide or tiny” fits because gaps can vary in size. So the riddle lists places where “a space between” shows up, and “gap” is the common thread.
Riddle: I can sizzle like bacon, I am made with an egg, I have plenty of backbone, but lack a good leg, I peel layers like onions, but still remain whole, I can be long, like a flagpole, yet fit in a hole. What am I?
Answer: I'm a snake.
Riddle: Pregnant every time you see her, yet she never will give birth. What is it?
Answer: Full Moon
Riddle: Start at one and add one forever; I grow but never end. What am I?
Answer: Infinity. It’s the process of counting: start at 1, then keep adding 1—2, 3, 4, and so on—without stopping. The total “grows” because the number increases, but it “never ends” because there’s no largest number; you can always add one more. Infinity is not a specific number, but rather a concept representing something without any bound or end, perfectly matching the description in the riddle.
Riddle: Some people like me some people don't. I can be good, but bad sometimes too. Who am I?
Answer: You.
Riddle: A structure with two occupants, sometimes one, rarely three. Break the walls, eat the borders, then throw away me. What am I?
Answer: A peanut.
Riddle: You use a knife to slice my head and weep beside me when I am dead. What am I?
Answer: An onion.
Riddle: When young, I am sweet in the sun. When middle-aged, I make you gay. When old, I am valued more than ever What am I?
Answer: Wine