You know when you (general you) are at a party, and people are mingling and there are several different conversations going on, and yet for some reason, every now and again, inexplicably there's a lull in every conversation in the room, all at the same time?
Someone once told me, as a legit superstition, that those lulls always happen at either 20 minutes til or 20 minutes after the hour.
Ever since then, whenever I'm at a party, I mention this fact. Inevitably someone will ask, "So, does it?" And I always say, "I don't know; I just think it's funny because after I mention it, every time there's a lull, everyone in the room will look at their watch."