My ds2 is 12 months.
Whenever he's been able to, he nips me either on the tummy, side or the breast whilst feeding. It's like lots and lots of tiny little nips using both hands.
It's weird and painful.
Obviously I stop him each time but he just starts up again - it's seems to be 'his' thing! Why is he doing it - is there a reason? I'm just curious.