>> can you describe the feeling? >> the best feeling in the world. my body is really, really tingly and warm but a good warm. it's like the feeling you get after you have sex, right after you orgasm. that's exactly what it feels like, an orgasm on steroids. >> claire tells me that chasing this feeling has led her to use in public places where she once had a close brush with the law. >> i was on the west side one day, and i was in the bathroom stall. an actual chicago police officer was banging on the door. all i remember is banging on the door, opening it with a needle still in my arm. he walked me to the car because i couldn't walk straight. the kid i was with had 3 1/2 grams with it. and the cop saw all of that, and he said, get the [ bleep ] out of the west side and didn't do anything. >> claire got lucky. in the state of illinois, if you are caught with less than 15 grams, you can face up to three years in prison.