Fake, the shadows are all wrong! You can tell it's fake because there's no horribly misspelled name on the cup. Nice try, Starbucks marketing.
This is the Starbucks cup some random customer allegedly decorated with a detailed map of Middle Earth. Did he draw it all from memory? No clue, but I'm kind of blown away at the time and effort this must have taken. Most people have jobs. Or at least sit around Starbucks on laptops pretending to have jobs and not doodling on their cups. Personally, whenever I go to Starbucks I try to get in and out of there as quick as possible without any employees noticing I just used their bathroom without buying anything.
Keep going for two more shots of espresso.
Thanks to PYY, who agrees the best thing at Starbucks isn't on the menu. It's on the menu at the Taco Bell across the street and it's called a Cheesy Gordita Crunch.