Interesting. As a Southerner, I grew up hearing that Southerners in the know painted their porch ceilings blue to keep bugs away. (Apparently the theory was that the bugs would be fooled into thinking that the porch ceiling, since it was blue, was actually the sky and that they wouldn’t build nests there.) However, a recent Internet search shows that there are a lot more people that paint their porch ceilings blue to keep away spirits than bugs. Who knew?

Infographic provided by CreditSesame.com.