Since we should all first seek to understand... Understanding Canadian Slang:
Garberator- Electric grinding device meant for the drain of a kitchen sink, to finely grind biodegradable substances, so they can be washed down the drain. Commonly referred to in the US as a "garbage disposal."
Homo Milk - A commoner's slang for homogenized whole milk; 3% milk.
Timmy's or Tim's or Timmy Ho's or Up the Horton's - Slang for Tim Horton's, a chain of doughnut and coffee shops named after a famous hockey player.
Poutine - (pronounced poo-TIN) French fries served with cheese curds, and covered in gravy. Originated in Quebec but now prevalent across C
anada.(Awesome delicious heart attack in a bowl. You aren't Canadian until you've played some hockey and stopped for some poutine and beer.)
Sook or sookie - Oftens means a weak, self-pitying person; a person who won't go along, especially out of spite; a crybaby or sore loser. Can also be a term of endearment for pets or children who are extremely affectionate. (Newfie term not used in rest of Canada unless used by Newfies.)
Beaver Tail - A pastry, most commonly sold by the chain Beaver Tail Canada Inc., indicating a flat, flaky, fried pastry in the general shape of a beaver's tail. It is often served with a variety of toppings: ice-cream, maple syrup, powdered sugar, and fruits. Originated in Ottawa.
Ginch, gonch; gitch or gotch - Archaic and long-standing debate on correct term for underwear. Northern British Columbians preferred ginch or gonch, while southern Albertans used gitch or gotch.
Canuck (when not said by Canadians) can be derogatory. They apply the term to themselves and each other as a term of endearment. But you shouldn't use the term unless you are Canadian. (Except that most Canadians like being called Canucks.. Just saying.. -Signed. The Canuck.-)
Hoser: The term has many origins: The most common refers to the game of hockey, before the invention of the zamboni, the losing team would have to hose down the ice. Thus creating the term "hoser"
Newfie - semi-derogatory term for a person from Newfoundland and Labrador. The term is primarily used in "Newfie jokes," the typical Canadian ethnic joke. Many Newfoundlander's use the term with pride amongst themselves, not taking offense to it when used without intention to insult.
Frog - derogatory term for French Canadians by Western Canadians. More commonly, however, is "Jean-Guy Pepper," or "Pepper," or "Pepsi," generally attributed to the insult that French-Canadians are like a bottle of Pepsi, having nothing but air between the neck and the cap.
Square head - derogatory term for Anglophone Canadians. Mostly used in Quebec. In Quebec, however, it's going to be said in French, i.e. "Tête carrée." (Say Thet-Karay)