This is some crazy shit.
According to a tweet this morning, New York rapper Donny Goines will attempt to break a Guinness Book World Record by freestyling for 24 hours non-stop live on October 1st:
Oct. 1st 2012 I will break a Guinness Book World Record by freestyling for 24 hours NONSTOP live!! worldslongestfreestyle.com— Donny Goines (@DonnyGoines) August 22, 2012
The current Guinness World Record for longest freestyle is held by Chiddy Bang who freestyled for 9 hour, 16 minutes, and 22 seconds in April 2011.