Top Definition
An excuse to do the dirty on christmas day. May be used to avoid the wrath of God for sinning on his son's birthday.
John: Are you free tonight? I need a little christmas lovin, if you know what I mean...

Jane: I'm not sure God would ever forgive me.

John: Don't worry, it's jesus birthday sex. He'll take it as a compliment that we are celebrating His birth.

Jane: Ok! Let's do it!
by Jbislollipop23 December 26, 2009
5 Words related to jesus birthday sex

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