This video claims the unusual size of Boris is due to Chinese food, yet Chinese people are statistically shorter than those from the UK. Hihosilver666 may not be a completely reliable source of information.
One look at his other videos will show you just how wrong you are! How can one person have so many videos of non-moving biggest and smallest animals in the world and be a teller of tall tales?
Say what you will, this video has 3.5 million views as of March 9th 2012. A million views a month isn't bad. He's probably making more off that video than your average gas station worker does in a day.