One trip to Starbucks a day will cover that. I'm sure a McDonalds milkshake isn't far off either...  820 calories for a large vanilla shake according to the Internet.   Or a big gulp at 7eleven is 1,100 or so.  It's actually surprisingly easy to get 1000 calories over maintenance if you drink your calories, because even when you're not hungry you can still sip on some liquid.   Fat people don't understand that though.