this guy came up with some great stuff.
Here’s what he did:
http://www.urlesque.com/2010/04/06/math-teacher-pranks/?icid=main|main|dl8|link2|http%3A%2F%2Fwww.urlesque.com%2F2010%2F04%2F06%2Fmath-teacher-pranks%2F
Here’s how he did it.
