Taste: WARNING! SPOILERS AHEAD! This is another "guess the mystery flavor" contest from Frito-Lay, a follow-up to Doritos X-13D. There were no words on the bag giving any clues to the flavor, but perhaps the color of the letters might give you a clue. The chips had a sweet flavor, and our tasters couldn't figure out whether it was more lemon- or lime-flavored. Some guesses included key lime pie, margarita flavors, etc. In the end, we decided it was Mountain Dew flavored, which makes sense if you go to the Doritos Interweb site and play the game. They're offering a chance to win $100,000 if you can solve a series of puzzles. Here's a hint: The first puzzle's answer is Mountain Dew.