What is this paper fan used by some student council president/senior member called? In many anime, a student council president or senior member uses essentially a paper 'fan' to discipline others.  Kind of looks like a paper that has been folded up.  

Is it really a fan of some sort or something different? Does it has a specific name (in Japanese)?
That'd be a Harisen, a paper fan used extensively in manzai comedy by the tsukkomi to smack the bokke's funny antics. I guess it just bleeded into anime for its comedic factor.