The context of the following conversation is Alex saw Tom and Sasha cheating on the biology final exam, and reported it to the teacher.:
Alex says As I was taking the test, Tom and Sasha were secretly looking at their notes..
The friend responds How do you know this?.
Alex responds I saw both of them pull out small pieces of paper from their desks..
The friend responds How do you know the paper included answers to the test?.
Alex responds I saw them copy information from the paper for each question..
The friend responds You snitched them in? What's wrong with you!.