Lath and plaster, bitches. I think drywall is singlehandedly responsible for the increase in violence over the last 50 years. Why? Because you can hear all the noise your neighbors are making ten times better through drywall than plaster. It makes you angry. My last house was built in '64 and had drywall with about 1 inch of plaster over it. That shit was like a sound booth. I miss that part.