Can't! But I wouldn't anyway since I dun weigh that much. In fact, I might not be able to because of that either. I don't have a problem with needles or anything, though. I never did, even as a kid. They'd always be like, "Look away, kiddo!" and I'd just stare at it instead. I'm a wuss most of the time, so I don't know what's going on with that.