A childhood belief about creepy crawlies

The year before I started school, my mother was reading some kind of a magazine which had something about headlice- maybe an ad for a headlice shampoo or something- anyway, the point of this thing was to alert people that headlice should be taken seriously. Anyway, the intelligent advertising technique that they chose to get their message across, was to show a little school boy, with a louse on his head. However, the louse was magnified millions of times, so that it was big enough to cover the whole top of his head. Once I saw it, I was terrified to go to school because I believed that headlice were really that big.