I donb't want to be misinterpreted here, but this is where societies that are not as politically-correct as the U.S. have an advantage. Almost anywhere in Europe, as far as I know, and especially in the East, that guy would be laughed at, people would talk about him within his earshot, and then openly tell him to take a shower... not just students, but teachers, too. Failing that, there's always the chance of a few guys jumping him and giving him a bath whether he likes it or not... and you know what? nobody would come afterwards to punish them.
Now, what's the chance that four people who try to forcefully give him a bath would get suspended at your school? I guess it's 100%...