Just waking up next to my girlfriend every Christmas morning when she'd come home from college over Christmas break. Our first hug and kiss after waking up together was so wonderful.
First Christmas morning with my (second) husband. Family was arriving later that day, so we had the morning to ourselves. While sitting on the couch by the Christmas tree, he proceeded to take off my PJs, brought me to an orgasm with his tongue, then fucked me. I had never done anything like that before on Christmas morning. It was wonderful!
When wife was still girlfriend and we would stay with my folks over Christmas, I would sneak into her room for some "Christmas cheer".