S'more is a contraction of the phrase "some more," referring to the
desire for another serving of the popular campfire treat of toasted
marshmallow and chocolate sandwiched between two pieces of graham
cracker.
The first known recipe for "Some More" appeared in a Girl Scout
guidebook titled Tramping and Trailing with the Girls Scouts in 1927.
National S'mores Day occurs every year on August 10th.