One sided, uneven burn. Called canoeing because the unburned side of the cigar begins to take on the shape of a canoe. I learned that term years ago from another smokeable item that is not a cigar...ahem....

I can see the name more when used in conjunction with "the other" smokeable item since it tends to bear a stronger resemblance when it burns unevenly.

Now mind you, I stopped that stuff A LONG, LONG time ago. Really.