Why do people laugh? What makes people laugh?

Why do people laugh? What makes people laugh?

Robert and Travis:

http://www.youtube.com/watch?v=Vg5Wv_uGvTc&feature=youtu.be

Austin:

http://www.youtube.com/watch?v=Q081j4yTmdk&feature=youtu.be

What is Lit? What is Civ?

What is Literature? What is Civilization?

Peter:

http://www.youtube.com/watch?v=xGrHYOk9IVo&feature=youtu.be

James:

http://www.youtube.com/watch?v=jHtAlhT2q1c&feature=youtu.be

Kurt:

http://www.youtube.com/watch?v=Aunepi1A4CA&feature=youtu.be