dts are nearly 9mo and in the last couple of days have moved on from just biting when they feed to biting arms/necks/whatever's near. this morning, after being bitten by dt2 (2 teeth) every feed in the night, then having him nip my arm, I lost it when dt1 (4 teeth) bit my arm hard and out of the blue. put them on the floor and screamed/swore at them, and stormed out the room. I've never done that before 
but I just saw red.
with the nipple biting I've tried to consistently say "no biting", put them down and walk away. this had some effect with dt1 when she was younger, and she rarely bites when feeding now. dt2 seems oblivious. what else can I do? I know it's probably teething related (but I can't calpol them every day for months on end), I know they're not trying to hurt me, but it does bloody hurt. is there any discipline that works at this age? I can't even relax to cuddle them right now in case them bite and I'm already worrying this will turn into biting each other or other babies when they start nursery in a couple of months :(