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1.
the evolution of feast mode. feast mode is like beast mode but performed only on foods. obeast mode is feast moding until the point of no return
c2 first beast mode feast mode and turned it into obeast mode
by c2iv October 30, 2011
 
2.
When someone is so good at something, they enter a mode of O'beastity which makes them O'beast. They then transcend a regular beast mode and enter what we call O'BEAST MODE.
Chris Johnson ran for 200 yards and 3 TDs??!! That guy is in O'beast mode!
by RaeDay May 22, 2011