Oh, remembered another, too. To irritate people me and my brother both, whenever we hear someone arguing how to pronounce "gif," we insist it should be pronounced Zsif. Like zsa zsa Gabor's first name. If you're familiar with Linux, there's a thing about whether the DE gnome should be pronounced guh-nome or nome. I'll pronounce it with a glottal stop at the beginning instead, and it drives people insane. (If you're unfamiliar with glottal stop, think of the way some northern England accents pronounce the t in water. "wa?er")