Some Muslims in countries such as Lebanon and Egypt celebrate Christmas amongst their friends, but the younger generation (people who are in their 20s, teenagers and children). Muslims above that age usually do not celebrate it because it's not in their Islamic religion. In Saudi Arabia, celebrating Christmas, putting up Christmas trees, and buying a tree is against the law. They consider it a public display of another person's religion and this is absolutely prohibited. Walking around with a cross on your neck is against the law as well. Christians and athiests (who celebrate it because it's mostly fun and traditional rather than religious) celebrate it privately just like in any country in the world... Presents, stalkings, Christmas cookies, candy and the huge dinner.