LOL! Yep, it's a Canadian thing.

http://www.urbandictionary.com/define.php?term=hoser

Here is a clip from the show SCTV where the term came from.

http://www.youtube.com/watch?v=kZyCVpM43MU

It's a parody on what many people in the USA think of Canadians. IE: we sit around and drink beer, use the word "Eh?" alot, and live in igloos.

"It is good to see ourselves as others see us. Try as we may, we are never
able to know ourselves fully as we are, especially the evil side of us.
This we can do only if we are not angry with our critics but will take in good
heart whatever they might have to say." - Ghandi