I teach in Hong Kong, where "face" is a major issue - i.e. if you can humiliate a student, you have his complete attention. This needn't be a negative thing either. The shock of that one red-faced moment will be enough to keep him quiet, but if you can make it in some way 'fun' then they won't resent you.
A technique my friend suggested is to bring the offender to the front of the class, facing the board. Get him on tip-toes, and then draw a spot at exactly nose-level. The student must then spent the next X minutes with his nose against the spot.
World's Best Jobs!
Dave's ESL Cafe Copyright © 2008 Dave Sperling. All Rights Reserved.