One morning, a pair of interns sitting behind me had the following exchange:
Intern #1: I always put my badge on right after getting off the Metro. I get off at Smithsonian, and there are so many tourists. I wouldn't want to be mistaken for one of them.
Intern #2: Yeah, totally. They always gawk. I always make sure I look down [to seem disinterested in our nation's splendor?]
Intern #1: Yeah. I really want to get one of those SmartTrip-card-thingies. They're so cool.
Intern #2: Yeah, I hear you get like $15.00 free when you get one.
Hint: don't mock "tourists" when you call it a "SmartTrip-card-thingy" and think that some WMATA fairy gives you $15 of fare for free.