Q: What do you call a sophisticated American? 

A: Canadian.

Q: What Dr Seuss book do they read every morning in Canada? 

A: Tim Hortons Hears a Who.

These are indeed jokes, albeit maybe not that funny (but at least not too offensive).  

Canadian tax law, on the other hand, is no joke. Recently the CRA provided information on the tasks a company must complete to get an exemption from withholding requirements on remuneration paid to "qualifying" non-resident employees for services performed in Canada. If the employer and the employee qualify, this will save the company time and CAD!