When trends get out of hand, down comes the banhammer
In a related note, the New York times ran an article that talked about how some schools went and banned hugging:
A measure of how rapidly the ritual is spreading is that some students complain of peer pressure to hug to fit in. And schools from Hillsdale, N.J., to Bend, Ore., wary in a litigious era about sexual harassment or improper touching — or citing hallway clogging and late arrivals to class — have banned hugging or imposed a three-second rule.