Oh, that's a good question! The first time I can recall seeing a red-nosed reindeer was in 1939, when the famous poem "Rudolph the Red-Nosed Reindeer" was published. It quickly became a popular Christmas song and story, and the image of a red-nosed reindeer pulling Santa's sleigh has become iconic. Of course, many people believe the story is just a myth or a metaphor for the power of kindness and acceptance, but it's still a fun part of Christmas traditions!