Riddle: I can be your best friend, or your worst enemy. I can make you clean or filthy. You can ride on me, or I can glide on you. Sharp I am mean, dull I am cruel. What am I?
Answer: A Razor. (Razor is also a brand of scooters).
Riddle: It's 7:00 am. You are asleep and there is a sudden knock on the door. Behind the door are your parents, who came to have breakfast. In your fridge: bread, milk (pasteurized!), juice, and a jar of jam. What do you open first?
Riddle: John's height is six feet. After school he works at a butcher's shop. Every morning he runs 5 miles and have 60 grams of protein. For lunch he enjoys a hearty steak. He is a college sophomore football prodigy, with size 11 shoes. What does he weigh?
Riddle: My first four letters describe a bouncy toy. My last four letters mean crazy. I am both tall and short, long and narrow. I scream when you poke me. What am I?