Shaun and Michael. 10 Brownie points each (well, 11 for Shaun for getting in first)
Rhon, you think too much! There is nothing cryptic about the 'e' - it, along with the apostrophe, simply expresses the distinction between "YOUR", (as in "YOUR WIFE IS CHINESE") and "YOU'RE", (as in "YOU'RE CANADIAN").
Being a teacher from a family of teachers is a curse sometimes. Like Roger Rabbit, who, after hearing "Da-da-da-da-da" cannot stop himself from responding, "Da da!", when hearing the English language used incorrectly, I have to bite my tongue from correcting it. I only usually mention it to teachers, who should know better, especially if they are teaching students the wrong thing.
I apologise to anyone who may have been offended by my little joke quiz. It was intended just to be a laugh. Also, it is a credit to those people's original style, that their writing can be so instantly identifiable.