Link please?
I may have erred since I cannot currently find the direct link to youtube.com whereby Clinton called Donna Brazile a 'brain dead buffalo'.
At best, I can only find 'third hand hearsay' reporting of the incident following the Matt Laurer televised interview.
This does not preclude its existence, ..just that I cannot currently find it; youtube has been known to delete accounts and videos in the past which youtube finds unsavory.
One of several accounts of the incident:
https://www.youtube.com/watch?v=5I8z-R5MQZ4