A sexual act, or acts, that aim to impress and satisfy someone in bed. When you take a girl home and give her the ChristmasGoose, you do your best in bed and pull out all the tricks.
#1: It was his birthday so I gave him the Christmas Goose.
#2: Bro did you give that girl at the bar the Christmas Goose?
an accidental or intentional light pat or bump on the derriere of a co-worker from another co-worker, male or female at any time throughout the year but especially during Christmastime.
Kevin bumped into Tracy while making drinks at the soda machine. Tracy blew it off, smiled and said "ChristmasGoose!"