Christ: (/kraɪst/) (ancient Greek: Χριστός, Christós, meaning 'anointed') is a translation of the Hebrew מָשִׁיחַ (Māšîaḥ), the Messiah, and is used as a title for Jesus in the New Testament.
According to the bible, Jesus was baptized when he was thirty years old. It was then that he gained the title: "Christ". Christ means "anointed". When someone becomes anointed in this sense, they become consecrated to God.
The kings of Israel were anointed. Moses was anointed. In fact Moses is referred to in the bible as a Christ. Christ is a title bestowed upon the anointed of god.
When Jesus was born he was a baby like any human. He had no memory of his pre-human existence because, think about it, if he was cognizant of everything all that time in the womb would have driven him insane. As a baby he was, practically speaking, useless. Like any human baby. About as far from a Christ as any of us can be regardless of his parentage. Even if he was born on December 25, and he certainly was not, he was not a Christ until thirty years later, as an adult and after being baptized.
Which means: At the time of Jesus's birth there was no Christ in the manger. There was a baby.
Christoholics: Please read your holy book. It's not rocket science. There has never been a Christ in Christmas.
Keeping Christ in Christmas Part I here.