There are a few earlier self adhesives that do require a bit more patience and longer soaking or re-soaking but most are fine to come off.
Some, once the release layer has been wetted, have the layer of gum kind of curl up, so you can kind of move the gum layer and paper layer separately between your fingers, and the gum layer will work itself free and separate and (continue rolling or moving fingers) roll into a glob of adhesive residue.
These 'extra' glue globs can be saved themselves. There are many ways of collecting them or many uses around the house but sadly most are thrown away in ignorance of the joys of glob gathering.
The word Canuck I really do not know the origins of either. I have the vague impression it meant a French Canadian woodsman from years ago?? However, here is an interesting article in Wikipedia about the origins of Canuck:
http://en.wikipedia.org/wiki/Canuck