Help! I have 19 mo.old twin boys who've shared a crib since birth. My house is very small with no room for another crib. They're not ready for a toddler bed or bunk beds, which is the plan. Plus, they like being together. The problem-one baby BITES and he has sharp teeth. My poor other baby gets bit a lot and it hurts. What do we do? He doesn't usually do this as an angry gesture. He seems to do this as something playful. We've got a chair and an empty pack'n'play that we've used for timeout, but it doesn't work. The pack'n'play is in a living room corner, but they don't mind being put in there alone. They're content to 'relax'. They won't stay in the chair. What do we do?