bilby: Har! Love that video. I used to make a "sh, sh, sh" sound that was pretty effective as well. I was told it was similar to a sound the baby heard in the womb. I'm guessing this works for the same reason.
“In postwar Japan, the economy wasn’t doing so great, so you couldn’t get everyday-use items like household cleaners,” says Lisa Katayama, author of “Urawaza,” a book named after the Japanese term for clever lifestyle tips and tricks. “So people looked for ways to do with what they had.”