Pink isn't in the rainbow, the last color of the rainbow would be either red or violet (depending what side you are saying it the "last"). OMG is also short for "oh my god", "LOL" is also short for "laughing out loud". Yellow also comes after green, depending in what direction you're listing the colors in. Why not "french toast"?
Just because you claim pink is in the rainbow, doesn't mean it is. The colors in the rainbow have to do with light, and there no pink light, therefore there is no pink in the rainbow. https://www.youtube.com/watch?v=S9dqJRyk0YM . And with the "god" thing, what I'm saying, is it is so common to hear "oh my god" (it's the only version I've every heard), that it should also be excepted. You can except more then just one answer to a question. So why is it only blue and not also yellow?