I poured hot hot sulfuric acid into this girls purse during and experiment!!!1?

You probably will get caught, because people who do this kind of stuff generally brag about it to somebody (or on-line), the story eventually gets back to the person you did it to and you get in trouble. When I was in school this was the most common way people got caught. You should hope Jane doesn't go onto Yahoo Answers to get help with her chemistry lab and find your question!