I'll be at the National Art Gallery and/or the Museum of Natural History (roughly Madison Dr. and 6th-10th St). I'm looking for something cheap and convenient that I can take my kids to. Any type of food except seafood.
Save the sweats and backward baseball cap for the stadium. When you're eating at a nice restaurant, dress the part. WTF Are You Doing?! gives chefs the chance to gleefully re-enact the awful behavior they see in their dining rooms every day.