As a Christian parent, I'd suggest not lying about your beliefs. Show them that video. Talk to them about love, familiy and religion and how they're different. A calm and rational, unselfish attitude will go a long way, IMO. The fact you're doing it all just to get presents is telling.
"There ought to be a term that would designate those who actually follow the teachings of Jesus, since the word 'Christian' has been largely divorced from those teachings, and so polluted by fundamentalists that it has come to connote their polar opposite: intolerance, vindictive hatred, and bigotry." -- Philip Stater, Huffington Post
always working on cleaning my windows- me regarding Johari
always working on cleaning my windows- me regarding Johari