he's wrong that "shit" is the most complicated word in english. That would be "jawn" - an adjective, noun, verb and more all in one little 4-letter package, which is also true of "shit", except that nobody not raised in Philadelphia knows the true scope of "jawn".
well i look forward to when ismo gets to philadelpia and learns about "yawn". i expect he'll start out saying something like "i thought when i learned about the word shit, it was the most complicated word in english, but i turns out i still didn't know shit ..."