Learn A Word: Prank

Do you know the word "prank"? Try figure out the following headline:

Harvard Pranks Yale With Hilarious Fake Admissions Tour
http://www.forbes.com/sites/susanadams/2013/11/22/harvard-pranks-yale-with-hilarious-fake-admissions-tour/#!

Surfer_Diver
2013.11.24