When somebody covers their hand in syrup and then fingers somebody else’s ass with the syrup. A common thing to do afterwards is to have the person fart out the maple syrup on pancakes.
Hey babe, do you want to do a Raging Canadian?
A super nice or quiet person who is usually very forgo ice and sweet, but is hell when angered and ends up vocalizing all their opinions and true feelings all at once
Person one: dude, what happened with Becky last night?
Person two: We got Into a fight and I guess I insulted her because she got really angry and threw a book at me.
Person one: I told you she had Canadian rage.