Corns are great snakes, lots of fun. Definitely VERY quick and can fit pretty much anywhere and will if given the chance. When handling, always keep them in your hands like Deborah said. I have two, and one will still rattle his tail every now and then to look tough, but he's still a juvenile, and it has decreased with time (only about two months). Neither have ever lunged or anything of the sort, and I've only been musked twice. Once was the day I took him home and moved him from his deli cup to his enclosure and the other was while he was in shed.
Good luck with your new little guy/girl!!