Useful pattern: fooling around with

1: Why are John and Jack in the hospital?
2: They were fooling around with firecrackers, and they accidentally burned their hands.

1: Why isn't Peter allowed to use the computer lab at school?
2: He was fooling around with the new printer and he broke it.

1: Why does your dog have green and purple fur?
2: The dog was fooling around with some cans of paint in the garage and the lids came off of two of the cans.

1: Why did Suzy's dad take away her driver's licence?
2: She was fooling around with her dad's new car and she crashed it into a tree.

1: Why does Johnny have a scar on his forehead?
2: Johnny was fooling around with his new bicycle and he accidentally rode into the back of a pick-up truck.

1: Why did the students get a bad score on the midterm?
2: They were fooling around with their friends in Sinchon instead of studying for the test.