The Associated Press produces the so-called journalist's bible -- its stylebook -- so it's fun to pick on AP's style gaffes. Here's one, from a story in Gabrielle Giffords' return to Congress, that's worth highlighting because the style point missed is a departure from Webster's New World College Dictionary: Don't use apostrophe-S to create plurals when using words as words, such as "ifs," "ands" and "buts."
Mr. Rewrite has included AP's rule below. You'll probably have to click to see it.
AP should have said that the congresswoman mouthed "thank yous." It looks goofy, but if you're going to produce a stylebook you might as well follow it.