I walked into the dentist office, and sitting at the table was "Dude." Dude is a 22-year-old dental technician who wears black concert T-shirts under his lab coat. He also wears an earring and a black leather bracelet with silver studs. I know Dude because he dropped out of my "Dental English" class after the third session. Dude sat staring at the floor, looking very depressed.

"What's wrong?" I asked the dentist.

"He's going to America."