It’s a good example of your dry, Yankee humor.
The group was going on a fishing trip on a remote lake via canoes and guided by guides who provided the canoes. Alfred, a big fella, stepped carefully into a canoe and sat. The seat gave way and Alfred ended up on the floor of the canoe, seat in splinters, and the vessel rocking precariously.
The one guide says to the other, “There goes your tip, Calvin.”