I noticed as a child that those little black ants that suddenly invade your kitchen during the spring all came around the same time of the year. When I asked a friend about it, she told me it was because 'Ant Day' was the day after Mother's Day. So from that point on, on Mother's Day, I would say things like "Enjoy your day, Mom. Tomorrow is Ant Day." and "The ants are going to try to take over our house tomorrow!" and so on. It seemed logical.. and I still (I'm 18 now) refer to the day after Mother's Day as 'Ant Day'!
A childhood belief about creepy crawlies

others believed things like this
- When I was little my mother told me that the chocolate sprinkles you put on ice-cream were ants.Anon
- I used to beleive that if we didn't spray the ants, there would be hundreds of them in my house taking over.— Rob
- My sister once asked her mother why she didn't paint her black....Anon
- I thought that "tomorrow" was one of the days of the week— Frank
- Long grass with black seeds were really ant hotels, and the seeds were sleeping ants.— angelsheep
- I used to believe that if you left crumbs out for a long period of time, they would turn into ants.— Bylaberrie