Pretty much self explanatory. If you or your friends do wacky antics stories, videos, pictures all acceptable. (even random videos you have found on the web.)
Basically any pranks you've done/seen or random funny shit.
here's some to start:
http://youtu.be/gyiAPLHUfMw
http://youtu.be/NhMhrhxw9pw
http://youtu.be/XfD8pq6oZhw