I'm going silly with the rain, but I searched "finger lake Maine" and found a marketing Blog that said: "...The fingers of the region are made up of four lakes Thompson Lake, Long Lake, Highland Lake, and Moose Pond. ..."
So I live here, and never heard the lake region called fingers. I then looked at a map, remember now its been raining for 4 days on/off, and it looks like Sebago is the hand (palm) and Crystal Lake, LL and Brandy is the middle finger. I thought that was clean and funny joke on this cold rainy Saturday.