Foreign Exchange student, usually from China, who can be found all around college campuses. Often speaks poor English and travels in packs with other Exchangers, always speaking in their native tongues to one another. Most often or not, an exchanger will work at on-campus convenient store, and the exchanger will mess up every purchase and cause huge delays in purchasing food, due to their inability to work a simple cash register. The Exchanger is also completely oblivious to the fact that the person paying is in a hurry and needs to get to class.
GUY1: What's with this long line?
GUY2: Can't you tell? There's an Exchanger, up front, working the register...
GUY1: Looks like he just messed up another credit card payment.