This Week's Topic: Mood Rings
So it is entirely possible that I watched the My Girl movies roughly 100 times during my youth. And because Vada Sultenfuss -- owner of an oft-black mood ring -- was my own personal hero, I bought myself a mood ring as a teenager, and another one (of a different shape) a few years later.
My mood rings tend to rapidly cycle through the colors whenever I wear them, which may say something (unflattering?) about my innerworkings. However, I've never seen one turn black. Hmm. I should wear one to my next dentist appointment. The ring would probably turn black, then. And freaking explode.
In popular culture
Mood rings were a short-lived fad of the mid-1970s (like the pet rock) and were especially popular with young girls. In a 1976 Peanuts comic strip, Peppermint Patty gets so angry at Charlie Brown that her mood ring explodes.
See? It can happen!