Kaley Cuoco new hairdo started to trend online today when celebrities hit a red carpet event, they know their looks are going to be scrutinized the next day, but Kaley Cuoco got more than she bargained for when she donned a hideous new hairdo to January's SAG Awards, leaving many wondering what on Earth she could have been thinking. On Thursday night's "Jimmy Kimmel Live," the 27-year-old finally answered that question. The hairstyle that had the fashion and celeb blogosphere up in arms involved fringey, face-framing, fake-looking bangs and straightened hair that replaced her usually wavy blond locks that night. The look was dubbed everything from "helmet head" to "horrific." Turns out the "Big Bang Theory" star had a good reason for wearing those big bangs … but admits the choice was a bad one. While rehearsing a scene with co-star Johnny Galecki, during which their characters were supposed to be fighting, the two decided to pull a