The JCer

Outside their natural habitat of the Jerusalem Center, this specimen is easily identified by the pants that were once baggy enough to be Kearl-Kosher, but now, 98.6 peanut butter/chocolate pitas later, are as snug as a bug in a rug. Or by the fact that they are always walking through the city on gender non-specific group dates, or by the feet, neck, watch and ankle tanlines they wear like battle scars.
Once spotted, they will respond to any of the following: "Mormon," "BYU," "Utah," or "sooo beautiful"... but they will probably give you a "la shukran" or "nien danke" in return.
They love having decisions made for them like what classes to take, when and where to eat, and even when and how to go to the bathroom ("Do I need my wad?"). They're also known to put anything and everything in a pita (eggs, cucumbers, yogurt, headsets, water bottles...)
Don't ask The JCer what time it is--they won't know. Instead, ask how many hours it's been since lunch, or how many hours until dinner. This makes much more sense to them.
The JCer also has quite a flavor for ancient architecture and won't get an apartment without a cistern. Or a mikveh.
But the real distinguishing feature of The JCer is that they won't be able to stop talking about the amazing people they met and the life-changing experiences they had during the last four months. And when they are telling you all about them, make sure to pay attention or they might snap their fingers in your face.