Teach your baby the sign for the word Christmas in baby sign language with the following description and video.
Form the signed letter C of the sign language alphabet in front of the face. Rotate the hand down and back up towards the face.
ASL Pro: http://www.aslpro.com/cgi-bin/aslpro/aslpro.cgi
Signing Savvy: http://www.signingsavvy.com/