A spelling error led to an elaborate cover-up doodle Monday, when Lisa Cone, 16, buried evidence that she had misspelled 'your' as 'you're.' 'Luckily, I was able to transform the 'e' into a cartoon face, using the loop in the 'e' as a nose and drawing eyes above it,' Cone said. 'I then got rid of the apostrophe by thickening the left side of the vertical line in the 'r' until it was swallowed up entirely.' 