Laughing gas wasn't used for anything surgical for about 70 years after its synthesis. Before that it was marketed as a novel carnival gag. Samuel Colt, who later went on to ruin both the musket industry and the Second Amendment, funded his gunsmithing dreams by selling laughing gas at the circus. Under the alias Dr. Coult (is it an alias if it sounds exactly the same?) his roadshow would "educate" people on the wonders of the goof gas for a quarter per hit -- though we're sure that the first giggle was free. Colt/Coult was far from the only guy passing the gas around. It quickly transformed into a high-society fad to sit in a parlor room and get a bunch of people to start laughing like fools. Famed poet and original druggie rock star Samuel Coleridge once said of the laughing-gas parties: "The first time I inspired the nitrous oxide, I felt a highly pleasurable sensation of warmth over my whole frame. ... The only motion which I felt inclined to make was that of laughing at those who were looking at me."
U.S. National Library of Medicine
"Plus, it really keeps the broads in line!"