Top Definition
The act of inserting maple syrup in the girls vagina and then having intercourse. Once the girl climaxes, the maple syrup and cum mix to form volcanic like liquids. It is quite popular in mountainous regions of Canada.
Earl: Dude last night Cara had an intense canadian volcano.

Peter: I bet it wasn't as big as the eruption Maria had a few nights ago.
by shelberry12 September 16, 2010

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