haha Classic Nasser!
Although it's a short interview it tells a lot about his personality. People call him "bitter" because he makes fun of others, but in actuality he just has a low tolerance for stupidity that's all. And when being involved in the bodybuilding industry it's a given that you will encounter many stupid people (including fellow competitors). Being intelligent he was a black sheep in the industry and kept his frustrations at his colleagues' stupidity within, but he could only keep it inside for so long! Hence the bb.com interviews and such.
Plus he looks incredible there doing seated rows! 
QFT!!
Nasser's intelligence and education made him something of an anomaly in terms of the BB "industry". he had to interact with so many who were just not on the same level as himself intellectually.......peo
ple who's pursuits outside of their profession of BB amounted to little more than when they could score their next hit or sale of nubain and other rec drugs. way too many dysfunctional people in the BB industry.
Nasser's dry humor and wit shining through in that FIBO video..................c
lassic............."people asking me weird questions like what shawn rays shoe size is"