Interesting Hacks to Facinate People.
Students at the university often practice practical jokes. The following quote is taken from the website detailing the various "hacks."
The word hack at MIT usually refers to a clever, benign, and "ethical" prank or practical joke, which is both challenging for the perpetrators and amusing to the MIT community (and sometimes even the rest of the world!). Note that this has nothing to do with computer (or phone) hacking (which we call "cracking").
The web link to the site is as follows:
http://hacks.mit.edu/Hacks/