Nobody likes a know-it-all.  Which is why nobody liked this guy, including his wife.  He just couldn't keep his big mouth shut, pontificating on the meaning of life, travel, and anything else that entered his over-burdened mind.  Not content to just let our guide do her job and lead the way, he actually went so far as to take her flag and do it himself (seen here).  At one point, he was even trying to teach her how to pronounce the word "horse" correctly, getting angry at her because she was pronouncing it "house".  Next thing you know he's going to try to teach her how to say "fried rice"...