The other day, we happened to have an hour or so free in college and we’d had lunch, walked about, and ended up just coming in to our empty class to chill out for a while.
When a bunch of college students are alone and have nothing to do, don’t worry… there’ll always be some form of entertainment.
So what started out as ‘i wonder if you can hop over that chair?’, resulted in ‘chair hurdles’ and ultimately ‘chair dominos’ 
[youtube]http://youtube.com/watch?v=UW5KU22_THQ[/youtube]