In reply to Mick Ryan - UKClimbing.com:
Sorry to hear about your accident - get well soon.
I've politely 'told off' a bunch of people for moving whilst holding the rope in their mouths over the last few years - it's really dangerous. It's usually a novice sport climber, gripped and trying to clip a bolt from below and being really stretched out.
Holding it between teeth momentarily whilst stationary to get extra rope out is OK (but still a bit risky) - but if you are doing this a lot, try and think about moving higher or level with the the bolt before clipping so you don't need as much rope out - it's also a lot less strenuous.