|>>|| No. 22715
Canada just isn't interesting enough to take the piss out of. Your only well-known cultural exports are slightly embarrassing pop singers like Céline Dion, Bryan Adams and Justin Bieber. That's not enough to sustain a joke.
Even when your American neighbours take the piss out of you, the only national stereotypes they have to fall back on are your milk bags, your politeness and your pronunciation of 'oot'. The Aussies, the Irish, our continental neighbours, they all have clear cultural differences that can be stereotyped for the purpose of humour. Canada is just too bland and unremarkable.