Keep the "Mass" in Christmas

From the Orthodixie blog, Fr. Joseph Honeycutt writes that the Church needs to adopt a slogan besides "Keep Christ in Christmas":

[S]houldn’t we be encouraging people to keep the MASS in Christmas? Face it, if we believe as we claim to: Christ is already there!

Yet it is the MASS, the Divine Liturgy for the Feast, that constitutes Christ’s Mass – CHRISTMAS!

Hear the whole thing here. (Plugged in part because I really enjoy Orthodixie, in part for the use of the term "Mass"!)